snapshot of https://github.com/ent/ent.git (master, 2026-09-15; blobs > 131072B omitted)

entc/integration/migrate/entv2/blog.go

@@ -0,0 +1,131 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"fmt"
+	"strings"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/blog"
+)
+
+// Blog is the model entity for the Blog schema.
+type Blog struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int `json:"id,omitempty"`
+	// Oid holds the value of the "oid" field.
+	Oid int `json:"oid,omitempty"`
+	// Edges holds the relations/edges for other nodes in the graph.
+	// The values are being populated by the BlogQuery when eager-loading is set.
+	Edges        BlogEdges `json:"edges"`
+	selectValues sql.SelectValues
+}
+
+// BlogEdges holds the relations/edges for other nodes in the graph.
+type BlogEdges struct {
+	// Admins holds the value of the admins edge.
+	Admins []*User `json:"admins,omitempty"`
+	// loadedTypes holds the information for reporting if a
+	// type was loaded (or requested) in eager-loading or not.
+	loadedTypes [1]bool
+}
+
+// AdminsOrErr returns the Admins value or an error if the edge
+// was not loaded in eager-loading.
+func (e BlogEdges) AdminsOrErr() ([]*User, error) {
+	if e.loadedTypes[0] {
+		return e.Admins, nil
+	}
+	return nil, &NotLoadedError{edge: "admins"}
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*Blog) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case blog.FieldID, blog.FieldOid:
+			values[i] = new(sql.NullInt64)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the Blog fields.
+func (_m *Blog) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case blog.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int(value.Int64)
+		case blog.FieldOid:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field oid", values[i])
+			} else if value.Valid {
+				_m.Oid = int(value.Int64)
+			}
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the Blog.
+// This includes values selected through modifiers, order, etc.
+func (_m *Blog) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// QueryAdmins queries the "admins" edge of the Blog entity.
+func (_m *Blog) QueryAdmins() *UserQuery {
+	return NewBlogClient(_m.config).QueryAdmins(_m)
+}
+
+// Update returns a builder for updating this Blog.
+// Note that you need to call Blog.Unwrap() before calling this method if this Blog
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *Blog) Update() *BlogUpdateOne {
+	return NewBlogClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the Blog entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *Blog) Unwrap() *Blog {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("entv2: Blog is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *Blog) String() string {
+	var builder strings.Builder
+	builder.WriteString("Blog(")
+	builder.WriteString(fmt.Sprintf("id=%v, ", _m.ID))
+	builder.WriteString("oid=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Oid))
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// Blogs is a parsable slice of Blog.
+type Blogs []*Blog

entc/integration/migrate/entv2/blog/blog.go

@@ -0,0 +1,84 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package blog
+
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+)
+
+const (
+	// Label holds the string label denoting the blog type in the database.
+	Label = "blog"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldOid holds the string denoting the oid field in the database.
+	FieldOid = "oid"
+	// EdgeAdmins holds the string denoting the admins edge name in mutations.
+	EdgeAdmins = "admins"
+	// UserFieldID holds the string denoting the ID field of the User.
+	UserFieldID = "oid"
+	// Table holds the table name of the blog in the database.
+	Table = "blogs"
+	// AdminsTable is the table that holds the admins relation/edge.
+	AdminsTable = "users"
+	// AdminsInverseTable is the table name for the User entity.
+	// It exists in this package in order to avoid circular dependency with the "user" package.
+	AdminsInverseTable = "users"
+	// AdminsColumn is the table column denoting the admins relation/edge.
+	AdminsColumn = "blog_admins"
+)
+
+// Columns holds all SQL columns for blog fields.
+var Columns = []string{
+	FieldID,
+	FieldOid,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+// OrderOption defines the ordering options for the Blog queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByOid orders the results by the oid field.
+func ByOid(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldOid, opts...).ToFunc()
+}
+
+// ByAdminsCount orders the results by admins count.
+func ByAdminsCount(opts ...sql.OrderTermOption) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborsCount(s, newAdminsStep(), opts...)
+	}
+}
+
+// ByAdmins orders the results by admins terms.
+func ByAdmins(term sql.OrderTerm, terms ...sql.OrderTerm) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newAdminsStep(), append([]sql.OrderTerm{term}, terms...)...)
+	}
+}
+func newAdminsStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(AdminsInverseTable, UserFieldID),
+		sqlgraph.Edge(sqlgraph.O2M, false, AdminsTable, AdminsColumn),
+	)
+}

entc/integration/migrate/entv2/blog/mutation.go

@@ -0,0 +1,362 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package blog
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// Mutation represents an operation that mutates the Blog nodes in the graph.
+type Mutation struct {
+	op            ent.Op
+	typ           string
+	oid           *int
+	addoid        *int
+	clearedFields map[string]struct{}
+	admins        map[int]struct{}
+	removedadmins map[int]struct{}
+	clearedadmins bool
+	predicates    []predicate.Blog
+}
+
+// NewMutation creates a new Mutation for the Blog entity.
+func NewMutation(op ent.Op) *Mutation {
+	return &Mutation{
+		op:            op,
+		typ:           "Blog",
+		clearedFields: make(map[string]struct{}),
+	}
+}
+
+// Predicates returns the list of predicates set on the mutation.
+func (m *Mutation) Predicates() []predicate.Blog {
+	return m.predicates
+}
+
+// SetOid sets the "oid" field.
+func (m *Mutation) SetOid(i int) {
+	m.oid = &i
+	m.addoid = nil
+}
+
+// Oid returns the value of the "oid" field in the mutation.
+func (m *Mutation) Oid() (r int, exists bool) {
+	v := m.oid
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// AddOid adds i to the "oid" field.
+func (m *Mutation) AddOid(i int) {
+	if m.addoid != nil {
+		*m.addoid += i
+	} else {
+		m.addoid = &i
+	}
+}
+
+// AddedOid returns the value that was added to the "oid" field in this mutation.
+func (m *Mutation) AddedOid() (r int, exists bool) {
+	v := m.addoid
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ResetOid resets all changes to the "oid" field.
+func (m *Mutation) ResetOid() {
+	m.oid = nil
+	m.addoid = nil
+}
+
+// AddAdminIDs adds the "admins" edge to the User entity by ids.
+func (m *Mutation) AddAdminIDs(ids ...int) {
+	if m.admins == nil {
+		m.admins = make(map[int]struct{})
+	}
+	for i := range ids {
+		m.admins[ids[i]] = struct{}{}
+	}
+}
+
+// ClearAdmins clears the "admins" edge to the User entity.
+func (m *Mutation) ClearAdmins() {
+	m.clearedadmins = true
+}
+
+// AdminsCleared reports if the "admins" edge to the User entity was cleared.
+func (m *Mutation) AdminsCleared() bool {
+	return m.clearedadmins
+}
+
+// RemoveAdminIDs removes the "admins" edge to the User entity by IDs.
+func (m *Mutation) RemoveAdminIDs(ids ...int) {
+	if m.removedadmins == nil {
+		m.removedadmins = make(map[int]struct{})
+	}
+	for i := range ids {
+		delete(m.admins, ids[i])
+		m.removedadmins[ids[i]] = struct{}{}
+	}
+}
+
+// RemovedAdmins returns the removed IDs of the "admins" edge to the User entity.
+func (m *Mutation) RemovedAdminsIDs() (ids []int) {
+	for id := range m.removedadmins {
+		ids = append(ids, id)
+	}
+	return
+}
+
+// AdminsIDs returns the "admins" edge IDs in the mutation.
+func (m *Mutation) AdminsIDs() (ids []int) {
+	for id := range m.admins {
+		ids = append(ids, id)
+	}
+	return
+}
+
+// ResetAdmins resets all changes to the "admins" edge.
+func (m *Mutation) ResetAdmins() {
+	m.admins = nil
+	m.clearedadmins = false
+	m.removedadmins = nil
+}
+
+// Where appends a list predicates to the Mutation builder.
+func (m *Mutation) Where(ps ...predicate.Blog) {
+	m.predicates = append(m.predicates, ps...)
+}
+
+// WhereP appends storage-level predicates to the Mutation builder. Using this method,
+// users can use type-assertion to append predicates that do not depend on any generated package.
+func (m *Mutation) WhereP(ps ...func(*sql.Selector)) {
+	p := make([]predicate.Blog, len(ps))
+	for i := range ps {
+		p[i] = ps[i]
+	}
+	m.Where(p...)
+}
+
+// Op returns the operation name.
+func (m *Mutation) Op() ent.Op {
+	return m.op
+}
+
+// SetOp allows setting the mutation operation.
+func (m *Mutation) SetOp(op ent.Op) {
+	m.op = op
+}
+
+// Type returns the node type of this mutation (Blog).
+func (m *Mutation) Type() string {
+	return m.typ
+}
+
+// Fields returns all fields that were changed during this mutation. Note that in
+// order to get all numeric fields that were incremented/decremented, call
+// AddedFields().
+func (m *Mutation) Fields() []string {
+	fields := make([]string, 0, 1)
+	if m.oid != nil {
+		fields = append(fields, FieldOid)
+	}
+	return fields
+}
+
+// Field returns the value of a field with the given name. The second boolean
+// return value indicates that this field was not set, or was not defined in the
+// schema.
+func (m *Mutation) Field(name string) (ent.Value, bool) {
+	switch name {
+	case FieldOid:
+		return m.Oid()
+	}
+	return nil, false
+}
+
+// OldField returns the old value of the field from the database. An error is
+// returned if the mutation operation is not UpdateOne, or the query to the
+// database failed.
+func (m *Mutation) OldField(ctx context.Context, name string) (ent.Value, error) {
+	return nil, fmt.Errorf("unknown Blog field %s", name)
+}
+
+// SetField sets the value of a field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) SetField(name string, value ent.Value) error {
+	switch name {
+	case FieldOid:
+		v, ok := value.(int)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetOid(v)
+		return nil
+	}
+	return fmt.Errorf("unknown Blog field %s", name)
+}
+
+// AddedFields returns all numeric fields that were incremented/decremented during
+// this mutation.
+func (m *Mutation) AddedFields() []string {
+	var fields []string
+	if m.addoid != nil {
+		fields = append(fields, FieldOid)
+	}
+	return fields
+}
+
+// AddedField returns the numeric value that was incremented/decremented on a field
+// with the given name. The second boolean return value indicates that this field
+// was not set, or was not defined in the schema.
+func (m *Mutation) AddedField(name string) (ent.Value, bool) {
+	switch name {
+	case FieldOid:
+		return m.AddedOid()
+	}
+	return nil, false
+}
+
+// AddField adds the value to the field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) AddField(name string, value ent.Value) error {
+	switch name {
+	case FieldOid:
+		v, ok := value.(int)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.AddOid(v)
+		return nil
+	}
+	return fmt.Errorf("unknown Blog numeric field %s", name)
+}
+
+// ClearedFields returns all nullable fields that were cleared during this
+// mutation.
+func (m *Mutation) ClearedFields() []string {
+	return nil
+}
+
+// FieldCleared returns a boolean indicating if a field with the given name was
+// cleared in this mutation.
+func (m *Mutation) FieldCleared(name string) bool {
+	_, ok := m.clearedFields[name]
+	return ok
+}
+
+// ClearField clears the value of the field with the given name. It returns an
+// error if the field is not defined in the schema.
+func (m *Mutation) ClearField(name string) error {
+	return fmt.Errorf("unknown Blog nullable field %s", name)
+}
+
+// ResetField resets all changes in the mutation for the field with the given name.
+// It returns an error if the field is not defined in the schema.
+func (m *Mutation) ResetField(name string) error {
+	switch name {
+	case FieldOid:
+		m.ResetOid()
+		return nil
+	}
+	return fmt.Errorf("unknown Blog field %s", name)
+}
+
+// AddedEdges returns all edge names that were set/added in this mutation.
+func (m *Mutation) AddedEdges() []string {
+	edges := make([]string, 0, 1)
+	if m.admins != nil {
+		edges = append(edges, EdgeAdmins)
+	}
+	return edges
+}
+
+// AddedIDs returns all IDs (to other nodes) that were added for the given edge
+// name in this mutation.
+func (m *Mutation) AddedIDs(name string) []ent.Value {
+	switch name {
+	case EdgeAdmins:
+		ids := make([]ent.Value, 0, len(m.admins))
+		for id := range m.admins {
+			ids = append(ids, id)
+		}
+		return ids
+	}
+	return nil
+}
+
+// RemovedEdges returns all edge names that were removed in this mutation.
+func (m *Mutation) RemovedEdges() []string {
+	edges := make([]string, 0, 1)
+	if m.removedadmins != nil {
+		edges = append(edges, EdgeAdmins)
+	}
+	return edges
+}
+
+// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
+// the given name in this mutation.
+func (m *Mutation) RemovedIDs(name string) []ent.Value {
+	switch name {
+	case EdgeAdmins:
+		ids := make([]ent.Value, 0, len(m.removedadmins))
+		for id := range m.removedadmins {
+			ids = append(ids, id)
+		}
+		return ids
+	}
+	return nil
+}
+
+// ClearedEdges returns all edge names that were cleared in this mutation.
+func (m *Mutation) ClearedEdges() []string {
+	edges := make([]string, 0, 1)
+	if m.clearedadmins {
+		edges = append(edges, EdgeAdmins)
+	}
+	return edges
+}
+
+// EdgeCleared returns a boolean which indicates if the edge with the given name
+// was cleared in this mutation.
+func (m *Mutation) EdgeCleared(name string) bool {
+	switch name {
+	case EdgeAdmins:
+		return m.clearedadmins
+	}
+	return false
+}
+
+// ClearEdge clears the value of the edge with the given name. It returns an error
+// if that edge is not defined in the schema.
+func (m *Mutation) ClearEdge(name string) error {
+	switch name {
+	}
+	return fmt.Errorf("unknown Blog unique edge %s", name)
+}
+
+// ResetEdge resets all changes to the edge with the given name in this mutation.
+// It returns an error if the edge is not defined in the schema.
+func (m *Mutation) ResetEdge(name string) error {
+	switch name {
+	case EdgeAdmins:
+		m.ResetAdmins()
+		return nil
+	}
+	return fmt.Errorf("unknown Blog edge %s", name)
+}

entc/integration/migrate/entv2/blog/where.go

@@ -0,0 +1,141 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package blog
+
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int) predicate.Blog {
+	return predicate.Blog(sql.FieldEQ(FieldID, id))
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int) predicate.Blog {
+	return predicate.Blog(sql.FieldEQ(FieldID, id))
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int) predicate.Blog {
+	return predicate.Blog(sql.FieldNEQ(FieldID, id))
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int) predicate.Blog {
+	return predicate.Blog(sql.FieldIn(FieldID, ids...))
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int) predicate.Blog {
+	return predicate.Blog(sql.FieldNotIn(FieldID, ids...))
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int) predicate.Blog {
+	return predicate.Blog(sql.FieldGT(FieldID, id))
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int) predicate.Blog {
+	return predicate.Blog(sql.FieldGTE(FieldID, id))
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int) predicate.Blog {
+	return predicate.Blog(sql.FieldLT(FieldID, id))
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int) predicate.Blog {
+	return predicate.Blog(sql.FieldLTE(FieldID, id))
+}
+
+// Oid applies equality check predicate on the "oid" field. It's identical to OidEQ.
+func Oid(v int) predicate.Blog {
+	return predicate.Blog(sql.FieldEQ(FieldOid, v))
+}
+
+// OidEQ applies the EQ predicate on the "oid" field.
+func OidEQ(v int) predicate.Blog {
+	return predicate.Blog(sql.FieldEQ(FieldOid, v))
+}
+
+// OidNEQ applies the NEQ predicate on the "oid" field.
+func OidNEQ(v int) predicate.Blog {
+	return predicate.Blog(sql.FieldNEQ(FieldOid, v))
+}
+
+// OidIn applies the In predicate on the "oid" field.
+func OidIn(vs ...int) predicate.Blog {
+	return predicate.Blog(sql.FieldIn(FieldOid, vs...))
+}
+
+// OidNotIn applies the NotIn predicate on the "oid" field.
+func OidNotIn(vs ...int) predicate.Blog {
+	return predicate.Blog(sql.FieldNotIn(FieldOid, vs...))
+}
+
+// OidGT applies the GT predicate on the "oid" field.
+func OidGT(v int) predicate.Blog {
+	return predicate.Blog(sql.FieldGT(FieldOid, v))
+}
+
+// OidGTE applies the GTE predicate on the "oid" field.
+func OidGTE(v int) predicate.Blog {
+	return predicate.Blog(sql.FieldGTE(FieldOid, v))
+}
+
+// OidLT applies the LT predicate on the "oid" field.
+func OidLT(v int) predicate.Blog {
+	return predicate.Blog(sql.FieldLT(FieldOid, v))
+}
+
+// OidLTE applies the LTE predicate on the "oid" field.
+func OidLTE(v int) predicate.Blog {
+	return predicate.Blog(sql.FieldLTE(FieldOid, v))
+}
+
+// HasAdmins applies the HasEdge predicate on the "admins" edge.
+func HasAdmins() predicate.Blog {
+	return predicate.Blog(func(s *sql.Selector) {
+		step := sqlgraph.NewStep(
+			sqlgraph.From(Table, FieldID),
+			sqlgraph.Edge(sqlgraph.O2M, false, AdminsTable, AdminsColumn),
+		)
+		sqlgraph.HasNeighbors(s, step)
+	})
+}
+
+// HasAdminsWith applies the HasEdge predicate on the "admins" edge with a given conditions (other predicates).
+func HasAdminsWith(preds ...predicate.User) predicate.Blog {
+	return predicate.Blog(func(s *sql.Selector) {
+		step := newAdminsStep()
+		sqlgraph.HasNeighborsWith(s, step, func(s *sql.Selector) {
+			for _, p := range preds {
+				p(s)
+			}
+		})
+	})
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.Blog) predicate.Blog {
+	return predicate.Blog(sql.AndPredicates(predicates...))
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.Blog) predicate.Blog {
+	return predicate.Blog(sql.OrPredicates(predicates...))
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.Blog) predicate.Blog {
+	return predicate.Blog(sql.NotPredicates(p))
+}

entc/integration/migrate/entv2/blog_create.go

@@ -0,0 +1,235 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/blog"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// BlogCreate is the builder for creating a Blog entity.
+type BlogCreate struct {
+	config
+	mutation *BlogMutation
+	hooks    []Hook
+}
+
+// SetOid sets the "oid" field.
+func (_c *BlogCreate) SetOid(v int) *BlogCreate {
+	_c.mutation.SetOid(v)
+	return _c
+}
+
+// SetID sets the "id" field.
+func (_c *BlogCreate) SetID(v int) *BlogCreate {
+	_c.mutation.SetID(v)
+	return _c
+}
+
+// AddAdminIDs adds the "admins" edge to the User entity by IDs.
+func (_c *BlogCreate) AddAdminIDs(ids ...int) *BlogCreate {
+	_c.mutation.AddAdminIDs(ids...)
+	return _c
+}
+
+// AddAdmins adds the "admins" edges to the User entity.
+func (_c *BlogCreate) AddAdmins(v ...*User) *BlogCreate {
+	ids := make([]int, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _c.AddAdminIDs(ids...)
+}
+
+// Mutation returns the BlogMutation object of the builder.
+func (_c *BlogCreate) Mutation() *BlogMutation {
+	return _c.mutation
+}
+
+// Save creates the Blog in the database.
+func (_c *BlogCreate) Save(ctx context.Context) (*Blog, error) {
+	return withHooks(ctx, _c.sqlSave, _c.mutation, _c.hooks)
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (_c *BlogCreate) SaveX(ctx context.Context) *Blog {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *BlogCreate) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *BlogCreate) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_c *BlogCreate) check() error {
+	switch _c.driver.Dialect() {
+	case dialect.MySQL, dialect.SQLite:
+		if _, ok := _c.mutation.Oid(); !ok {
+			return &ValidationError{Name: "oid", err: errors.New(`entv2: missing required field "Blog.oid"`)}
+		}
+	}
+	return nil
+}
+
+func (_c *BlogCreate) sqlSave(ctx context.Context) (*Blog, error) {
+	if err := _c.check(); err != nil {
+		return nil, err
+	}
+	_node, _spec := _c.createSpec()
+	if err := sqlgraph.CreateNode(ctx, _c.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	if _spec.ID.Value != _node.ID {
+		id := _spec.ID.Value.(int64)
+		_node.ID = int(id)
+	}
+	_c.mutation.id = &_node.ID
+	_c.mutation.done = true
+	return _node, nil
+}
+
+func (_c *BlogCreate) createSpec() (*Blog, *sqlgraph.CreateSpec) {
+	var (
+		_node = &Blog{config: _c.config}
+		_spec = sqlgraph.NewCreateSpec(blog.Table, sqlgraph.NewFieldSpec(blog.FieldID, field.TypeInt))
+	)
+	if id, ok := _c.mutation.ID(); ok {
+		_node.ID = id
+		_spec.ID.Value = id
+	}
+	if value, ok := _c.mutation.Oid(); ok {
+		_spec.SetField(blog.FieldOid, field.TypeInt, value)
+		_node.Oid = value
+	}
+	if nodes := _c.mutation.AdminsIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   blog.AdminsTable,
+			Columns: []string{blog.AdminsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges = append(_spec.Edges, edge)
+	}
+	return _node, _spec
+}
+
+// BlogCreateBulk is the builder for creating many Blog entities in bulk.
+type BlogCreateBulk struct {
+	config
+	err      error
+	builders []*BlogCreate
+}
+
+// Save creates the Blog entities in the database.
+func (_c *BlogCreateBulk) Save(ctx context.Context) ([]*Blog, error) {
+	if _c.err != nil {
+		return nil, _c.err
+	}
+	specs := make([]*sqlgraph.CreateSpec, len(_c.builders))
+	nodes := make([]*Blog, len(_c.builders))
+	mutators := make([]Mutator, len(_c.builders))
+	for i := range _c.builders {
+		func(i int, root context.Context) {
+			builder := _c.builders[i]
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*BlogMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				var err error
+				nodes[i], specs[i] = builder.createSpec()
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, _c.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, _c.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{msg: err.Error(), wrap: err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				if specs[i].ID.Value != nil && nodes[i].ID == 0 {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int(id)
+				}
+				mutation.done = true
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, _c.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_c *BlogCreateBulk) SaveX(ctx context.Context) []*Blog {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *BlogCreateBulk) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *BlogCreateBulk) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/blog_delete.go

@@ -0,0 +1,92 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/blog"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// BlogDelete is the builder for deleting a Blog entity.
+type BlogDelete struct {
+	config
+	hooks    []Hook
+	mutation *BlogMutation
+}
+
+// Where appends a list predicates to the BlogDelete builder.
+func (_d *BlogDelete) Where(ps ...predicate.Blog) *BlogDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *BlogDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *BlogDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *BlogDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(blog.Table, sqlgraph.NewFieldSpec(blog.FieldID, field.TypeInt))
+	if ps := _d.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// BlogDeleteOne is the builder for deleting a single Blog entity.
+type BlogDeleteOne struct {
+	_d *BlogDelete
+}
+
+// Where appends a list predicates to the BlogDelete builder.
+func (_d *BlogDeleteOne) Where(ps ...predicate.Blog) *BlogDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *BlogDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{blog.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *BlogDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/blog_query.go

@@ -0,0 +1,611 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"database/sql/driver"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/blog"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// BlogQuery is the builder for querying Blog entities.
+type BlogQuery struct {
+	config
+	ctx        *QueryContext
+	order      []blog.OrderOption
+	inters     []Interceptor
+	predicates []predicate.Blog
+	withAdmins *UserQuery
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the BlogQuery builder.
+func (_q *BlogQuery) Where(ps ...predicate.Blog) *BlogQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *BlogQuery) Limit(limit int) *BlogQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *BlogQuery) Offset(offset int) *BlogQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *BlogQuery) Unique(unique bool) *BlogQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *BlogQuery) Order(o ...blog.OrderOption) *BlogQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// QueryAdmins chains the current query on the "admins" edge.
+func (_q *BlogQuery) QueryAdmins() *UserQuery {
+	query := (&UserClient{config: _q.config}).Query()
+	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
+		if err := _q.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		selector := _q.sqlQuery(ctx)
+		if err := selector.Err(); err != nil {
+			return nil, err
+		}
+		step := sqlgraph.NewStep(
+			sqlgraph.From(blog.Table, blog.FieldID, selector),
+			sqlgraph.To(user.Table, user.FieldID),
+			sqlgraph.Edge(sqlgraph.O2M, false, blog.AdminsTable, blog.AdminsColumn),
+		)
+		fromU = sqlgraph.SetNeighbors(_q.driver.Dialect(), step)
+		return fromU, nil
+	}
+	return query
+}
+
+// First returns the first Blog entity from the query.
+// Returns a *NotFoundError when no Blog was found.
+func (_q *BlogQuery) First(ctx context.Context) (*Blog, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{blog.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *BlogQuery) FirstX(ctx context.Context) *Blog {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first Blog ID from the query.
+// Returns a *NotFoundError when no Blog ID was found.
+func (_q *BlogQuery) FirstID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{blog.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *BlogQuery) FirstIDX(ctx context.Context) int {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single Blog entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one Blog entity is found.
+// Returns a *NotFoundError when no Blog entities are found.
+func (_q *BlogQuery) Only(ctx context.Context) (*Blog, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{blog.Label}
+	default:
+		return nil, &NotSingularError{blog.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *BlogQuery) OnlyX(ctx context.Context) *Blog {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only Blog ID in the query.
+// Returns a *NotSingularError when more than one Blog ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *BlogQuery) OnlyID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{blog.Label}
+	default:
+		err = &NotSingularError{blog.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *BlogQuery) OnlyIDX(ctx context.Context) int {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of Blogs.
+func (_q *BlogQuery) All(ctx context.Context) ([]*Blog, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*Blog, *BlogQuery]()
+	return withInterceptors[[]*Blog](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *BlogQuery) AllX(ctx context.Context) []*Blog {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of Blog IDs.
+func (_q *BlogQuery) IDs(ctx context.Context) (ids []int, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(blog.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *BlogQuery) IDsX(ctx context.Context) []int {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *BlogQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*BlogQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *BlogQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *BlogQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("entv2: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *BlogQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the BlogQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *BlogQuery) Clone() *BlogQuery {
+	if _q == nil {
+		return nil
+	}
+	return &BlogQuery{
+		config:     _q.config,
+		ctx:        _q.ctx.Clone(),
+		order:      append([]blog.OrderOption{}, _q.order...),
+		inters:     append([]Interceptor{}, _q.inters...),
+		predicates: append([]predicate.Blog{}, _q.predicates...),
+		withAdmins: _q.withAdmins.Clone(),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// WithAdmins tells the query-builder to eager-load the nodes that are connected to
+// the "admins" edge. The optional arguments are used to configure the query builder of the edge.
+func (_q *BlogQuery) WithAdmins(opts ...func(*UserQuery)) *BlogQuery {
+	query := (&UserClient{config: _q.config}).Query()
+	for _, opt := range opts {
+		opt(query)
+	}
+	_q.withAdmins = query
+	return _q
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		Oid int `json:"oid,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.Blog.Query().
+//		GroupBy(blog.FieldOid).
+//		Aggregate(entv2.Count()).
+//		Scan(ctx, &v)
+func (_q *BlogQuery) GroupBy(field string, fields ...string) *BlogGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &BlogGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = blog.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		Oid int `json:"oid,omitempty"`
+//	}
+//
+//	client.Blog.Query().
+//		Select(blog.FieldOid).
+//		Scan(ctx, &v)
+func (_q *BlogQuery) Select(fields ...string) *BlogSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &BlogSelect{BlogQuery: _q}
+	sbuild.label = blog.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a BlogSelect configured with the given aggregations.
+func (_q *BlogQuery) Aggregate(fns ...AggregateFunc) *BlogSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *BlogQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("entv2: uninitialized interceptor (forgotten import entv2/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !blog.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *BlogQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Blog, error) {
+	var (
+		nodes       = []*Blog{}
+		_spec       = _q.querySpec()
+		loadedTypes = [1]bool{
+			_q.withAdmins != nil,
+		}
+	)
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*Blog).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &Blog{config: _q.config}
+		nodes = append(nodes, node)
+		node.Edges.loadedTypes = loadedTypes
+		return node.assignValues(columns, values)
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	if query := _q.withAdmins; query != nil {
+		if err := _q.loadAdmins(ctx, query, nodes,
+			func(n *Blog) { n.Edges.Admins = []*User{} },
+			func(n *Blog, e *User) { n.Edges.Admins = append(n.Edges.Admins, e) }); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+func (_q *BlogQuery) loadAdmins(ctx context.Context, query *UserQuery, nodes []*Blog, init func(*Blog), assign func(*Blog, *User)) error {
+	fks := make([]driver.Value, 0, len(nodes))
+	nodeids := make(map[int]*Blog)
+	for i := range nodes {
+		fks = append(fks, nodes[i].ID)
+		nodeids[nodes[i].ID] = nodes[i]
+		if init != nil {
+			init(nodes[i])
+		}
+	}
+	query.withFKs = true
+	query.Where(predicate.User(func(s *sql.Selector) {
+		s.Where(sql.InValues(s.C(blog.AdminsColumn), fks...))
+	}))
+	neighbors, err := query.All(ctx)
+	if err != nil {
+		return err
+	}
+	for _, n := range neighbors {
+		fk := n.blog_admins
+		if fk == nil {
+			return fmt.Errorf(`foreign-key "blog_admins" is nil for node %v`, n.ID)
+		}
+		node, ok := nodeids[*fk]
+		if !ok {
+			return fmt.Errorf(`unexpected referenced foreign-key "blog_admins" returned %v for node %v`, *fk, n.ID)
+		}
+		assign(node, n)
+	}
+	return nil
+}
+
+func (_q *BlogQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *BlogQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(blog.Table, blog.Columns, sqlgraph.NewFieldSpec(blog.FieldID, field.TypeInt))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, blog.FieldID)
+		for i := range fields {
+			if fields[i] != blog.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *BlogQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(blog.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = blog.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// BlogGroupBy is the group-by builder for Blog entities.
+type BlogGroupBy struct {
+	selector
+	build *BlogQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *BlogGroupBy) Aggregate(fns ...AggregateFunc) *BlogGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *BlogGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*BlogQuery, *BlogGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *BlogGroupBy) sqlScan(ctx context.Context, root *BlogQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// BlogSelect is the builder for selecting fields of Blog entities.
+type BlogSelect struct {
+	*BlogQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *BlogSelect) Aggregate(fns ...AggregateFunc) *BlogSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *BlogSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*BlogQuery, *BlogSelect](ctx, _s.BlogQuery, _s, _s.inters, v)
+}
+
+func (_s *BlogSelect) sqlScan(ctx context.Context, root *BlogQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

entc/integration/migrate/entv2/blog_update.go

@@ -0,0 +1,396 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/blog"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// BlogUpdate is the builder for updating Blog entities.
+type BlogUpdate struct {
+	config
+	hooks    []Hook
+	mutation *BlogMutation
+}
+
+// Where appends a list predicates to the BlogUpdate builder.
+func (_u *BlogUpdate) Where(ps ...predicate.Blog) *BlogUpdate {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// SetOid sets the "oid" field.
+func (_u *BlogUpdate) SetOid(v int) *BlogUpdate {
+	_u.mutation.ResetOid()
+	_u.mutation.SetOid(v)
+	return _u
+}
+
+// SetNillableOid sets the "oid" field if the given value is not nil.
+func (_u *BlogUpdate) SetNillableOid(v *int) *BlogUpdate {
+	if v != nil {
+		_u.SetOid(*v)
+	}
+	return _u
+}
+
+// AddOid adds value to the "oid" field.
+func (_u *BlogUpdate) AddOid(v int) *BlogUpdate {
+	_u.mutation.AddOid(v)
+	return _u
+}
+
+// AddAdminIDs adds the "admins" edge to the User entity by IDs.
+func (_u *BlogUpdate) AddAdminIDs(ids ...int) *BlogUpdate {
+	_u.mutation.AddAdminIDs(ids...)
+	return _u
+}
+
+// AddAdmins adds the "admins" edges to the User entity.
+func (_u *BlogUpdate) AddAdmins(v ...*User) *BlogUpdate {
+	ids := make([]int, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.AddAdminIDs(ids...)
+}
+
+// Mutation returns the BlogMutation object of the builder.
+func (_u *BlogUpdate) Mutation() *BlogMutation {
+	return _u.mutation
+}
+
+// ClearAdmins clears all "admins" edges to the User entity.
+func (_u *BlogUpdate) ClearAdmins() *BlogUpdate {
+	_u.mutation.ClearAdmins()
+	return _u
+}
+
+// RemoveAdminIDs removes the "admins" edge to User entities by IDs.
+func (_u *BlogUpdate) RemoveAdminIDs(ids ...int) *BlogUpdate {
+	_u.mutation.RemoveAdminIDs(ids...)
+	return _u
+}
+
+// RemoveAdmins removes "admins" edges to User entities.
+func (_u *BlogUpdate) RemoveAdmins(v ...*User) *BlogUpdate {
+	ids := make([]int, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.RemoveAdminIDs(ids...)
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (_u *BlogUpdate) Save(ctx context.Context) (int, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *BlogUpdate) SaveX(ctx context.Context) int {
+	affected, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (_u *BlogUpdate) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *BlogUpdate) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *BlogUpdate) sqlSave(ctx context.Context) (_node int, err error) {
+	_spec := sqlgraph.NewUpdateSpec(blog.Table, blog.Columns, sqlgraph.NewFieldSpec(blog.FieldID, field.TypeInt))
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Oid(); ok {
+		_spec.SetField(blog.FieldOid, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedOid(); ok {
+		_spec.AddField(blog.FieldOid, field.TypeInt, value)
+	}
+	if _u.mutation.AdminsCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   blog.AdminsTable,
+			Columns: []string{blog.AdminsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.RemovedAdminsIDs(); len(nodes) > 0 && !_u.mutation.AdminsCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   blog.AdminsTable,
+			Columns: []string{blog.AdminsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.AdminsIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   blog.AdminsTable,
+			Columns: []string{blog.AdminsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{blog.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return 0, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}
+
+// BlogUpdateOne is the builder for updating a single Blog entity.
+type BlogUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *BlogMutation
+}
+
+// SetOid sets the "oid" field.
+func (_u *BlogUpdateOne) SetOid(v int) *BlogUpdateOne {
+	_u.mutation.ResetOid()
+	_u.mutation.SetOid(v)
+	return _u
+}
+
+// SetNillableOid sets the "oid" field if the given value is not nil.
+func (_u *BlogUpdateOne) SetNillableOid(v *int) *BlogUpdateOne {
+	if v != nil {
+		_u.SetOid(*v)
+	}
+	return _u
+}
+
+// AddOid adds value to the "oid" field.
+func (_u *BlogUpdateOne) AddOid(v int) *BlogUpdateOne {
+	_u.mutation.AddOid(v)
+	return _u
+}
+
+// AddAdminIDs adds the "admins" edge to the User entity by IDs.
+func (_u *BlogUpdateOne) AddAdminIDs(ids ...int) *BlogUpdateOne {
+	_u.mutation.AddAdminIDs(ids...)
+	return _u
+}
+
+// AddAdmins adds the "admins" edges to the User entity.
+func (_u *BlogUpdateOne) AddAdmins(v ...*User) *BlogUpdateOne {
+	ids := make([]int, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.AddAdminIDs(ids...)
+}
+
+// Mutation returns the BlogMutation object of the builder.
+func (_u *BlogUpdateOne) Mutation() *BlogMutation {
+	return _u.mutation
+}
+
+// ClearAdmins clears all "admins" edges to the User entity.
+func (_u *BlogUpdateOne) ClearAdmins() *BlogUpdateOne {
+	_u.mutation.ClearAdmins()
+	return _u
+}
+
+// RemoveAdminIDs removes the "admins" edge to User entities by IDs.
+func (_u *BlogUpdateOne) RemoveAdminIDs(ids ...int) *BlogUpdateOne {
+	_u.mutation.RemoveAdminIDs(ids...)
+	return _u
+}
+
+// RemoveAdmins removes "admins" edges to User entities.
+func (_u *BlogUpdateOne) RemoveAdmins(v ...*User) *BlogUpdateOne {
+	ids := make([]int, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.RemoveAdminIDs(ids...)
+}
+
+// Where appends a list predicates to the BlogUpdate builder.
+func (_u *BlogUpdateOne) Where(ps ...predicate.Blog) *BlogUpdateOne {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (_u *BlogUpdateOne) Select(field string, fields ...string) *BlogUpdateOne {
+	_u.fields = append([]string{field}, fields...)
+	return _u
+}
+
+// Save executes the query and returns the updated Blog entity.
+func (_u *BlogUpdateOne) Save(ctx context.Context) (*Blog, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *BlogUpdateOne) SaveX(ctx context.Context) *Blog {
+	node, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (_u *BlogUpdateOne) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *BlogUpdateOne) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *BlogUpdateOne) sqlSave(ctx context.Context) (_node *Blog, err error) {
+	_spec := sqlgraph.NewUpdateSpec(blog.Table, blog.Columns, sqlgraph.NewFieldSpec(blog.FieldID, field.TypeInt))
+	id, ok := _u.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "id", err: errors.New(`entv2: missing "Blog.id" for update`)}
+	}
+	_spec.Node.ID.Value = id
+	if fields := _u.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, blog.FieldID)
+		for _, f := range fields {
+			if !blog.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+			}
+			if f != blog.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Oid(); ok {
+		_spec.SetField(blog.FieldOid, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedOid(); ok {
+		_spec.AddField(blog.FieldOid, field.TypeInt, value)
+	}
+	if _u.mutation.AdminsCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   blog.AdminsTable,
+			Columns: []string{blog.AdminsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.RemovedAdminsIDs(); len(nodes) > 0 && !_u.mutation.AdminsCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   blog.AdminsTable,
+			Columns: []string{blog.AdminsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.AdminsIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   blog.AdminsTable,
+			Columns: []string{blog.AdminsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	_node = &Blog{config: _u.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{blog.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}

entc/integration/migrate/entv2/car.go

@@ -0,0 +1,146 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"fmt"
+	"strings"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/car"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+)
+
+// Car is the model entity for the Car schema.
+type Car struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int `json:"id,omitempty"`
+	// Name holds the value of the "name" field.
+	Name string `json:"name,omitempty"`
+	// Edges holds the relations/edges for other nodes in the graph.
+	// The values are being populated by the CarQuery when eager-loading is set.
+	Edges        CarEdges `json:"edges"`
+	user_car     *int
+	selectValues sql.SelectValues
+}
+
+// CarEdges holds the relations/edges for other nodes in the graph.
+type CarEdges struct {
+	// Owner holds the value of the owner edge.
+	Owner *User `json:"owner,omitempty"`
+	// loadedTypes holds the information for reporting if a
+	// type was loaded (or requested) in eager-loading or not.
+	loadedTypes [1]bool
+}
+
+// OwnerOrErr returns the Owner value or an error if the edge
+// was not loaded in eager-loading, or loaded but was not found.
+func (e CarEdges) OwnerOrErr() (*User, error) {
+	if e.Owner != nil {
+		return e.Owner, nil
+	} else if e.loadedTypes[0] {
+		return nil, &NotFoundError{label: user.Label}
+	}
+	return nil, &NotLoadedError{edge: "owner"}
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*Car) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case car.FieldID:
+			values[i] = new(sql.NullInt64)
+		case car.FieldName:
+			values[i] = new(sql.NullString)
+		case car.ForeignKeys[0]: // user_car
+			values[i] = new(sql.NullInt64)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the Car fields.
+func (_m *Car) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case car.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int(value.Int64)
+		case car.FieldName:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field name", values[i])
+			} else if value.Valid {
+				_m.Name = value.String
+			}
+		case car.ForeignKeys[0]:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for edge-field user_car", value)
+			} else if value.Valid {
+				_m.user_car = new(int)
+				*_m.user_car = int(value.Int64)
+			}
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the Car.
+// This includes values selected through modifiers, order, etc.
+func (_m *Car) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// QueryOwner queries the "owner" edge of the Car entity.
+func (_m *Car) QueryOwner() *UserQuery {
+	return NewCarClient(_m.config).QueryOwner(_m)
+}
+
+// Update returns a builder for updating this Car.
+// Note that you need to call Car.Unwrap() before calling this method if this Car
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *Car) Update() *CarUpdateOne {
+	return NewCarClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the Car entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *Car) Unwrap() *Car {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("entv2: Car is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *Car) String() string {
+	var builder strings.Builder
+	builder.WriteString("Car(")
+	builder.WriteString(fmt.Sprintf("id=%v, ", _m.ID))
+	builder.WriteString("name=")
+	builder.WriteString(_m.Name)
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// Cars is a parsable slice of Car.
+type Cars []*Car

entc/integration/migrate/entv2/car/car.go

@@ -0,0 +1,88 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package car
+
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+)
+
+const (
+	// Label holds the string label denoting the car type in the database.
+	Label = "car"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldName holds the string denoting the name field in the database.
+	FieldName = "name"
+	// EdgeOwner holds the string denoting the owner edge name in mutations.
+	EdgeOwner = "owner"
+	// UserFieldID holds the string denoting the ID field of the User.
+	UserFieldID = "oid"
+	// Table holds the table name of the car in the database.
+	Table = "Car"
+	// OwnerTable is the table that holds the owner relation/edge.
+	OwnerTable = "Car"
+	// OwnerInverseTable is the table name for the User entity.
+	// It exists in this package in order to avoid circular dependency with the "user" package.
+	OwnerInverseTable = "users"
+	// OwnerColumn is the table column denoting the owner relation/edge.
+	OwnerColumn = "user_car"
+)
+
+// Columns holds all SQL columns for car fields.
+var Columns = []string{
+	FieldID,
+	FieldName,
+}
+
+// ForeignKeys holds the SQL foreign-keys that are owned by the "Car"
+// table and are not defined as standalone fields in the schema.
+var ForeignKeys = []string{
+	"user_car",
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	for i := range ForeignKeys {
+		if column == ForeignKeys[i] {
+			return true
+		}
+	}
+	return false
+}
+
+// OrderOption defines the ordering options for the Car queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByName orders the results by the name field.
+func ByName(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldName, opts...).ToFunc()
+}
+
+// ByOwnerField orders the results by owner field.
+func ByOwnerField(field string, opts ...sql.OrderTermOption) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newOwnerStep(), sql.OrderByField(field, opts...))
+	}
+}
+func newOwnerStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(OwnerInverseTable, UserFieldID),
+		sqlgraph.Edge(sqlgraph.M2O, true, OwnerTable, OwnerColumn),
+	)
+}

entc/integration/migrate/entv2/car/mutation.go

@@ -0,0 +1,322 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package car
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// Mutation represents an operation that mutates the Car nodes in the graph.
+type Mutation struct {
+	op            ent.Op
+	typ           string
+	name          *string
+	clearedFields map[string]struct{}
+	owner         *int
+	clearedowner  bool
+	predicates    []predicate.Car
+}
+
+// NewMutation creates a new Mutation for the Car entity.
+func NewMutation(op ent.Op) *Mutation {
+	return &Mutation{
+		op:            op,
+		typ:           "Car",
+		clearedFields: make(map[string]struct{}),
+	}
+}
+
+// Predicates returns the list of predicates set on the mutation.
+func (m *Mutation) Predicates() []predicate.Car {
+	return m.predicates
+}
+
+// SetName sets the "name" field.
+func (m *Mutation) SetName(s string) {
+	m.name = &s
+}
+
+// Name returns the value of the "name" field in the mutation.
+func (m *Mutation) Name() (r string, exists bool) {
+	v := m.name
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearName clears the value of the "name" field.
+func (m *Mutation) ClearName() {
+	m.name = nil
+	m.clearedFields[FieldName] = struct{}{}
+}
+
+// NameCleared returns if the "name" field was cleared in this mutation.
+func (m *Mutation) NameCleared() bool {
+	_, ok := m.clearedFields[FieldName]
+	return ok
+}
+
+// ResetName resets all changes to the "name" field.
+func (m *Mutation) ResetName() {
+	m.name = nil
+	delete(m.clearedFields, FieldName)
+}
+
+// SetOwnerID sets the "owner" edge to the User entity by id.
+func (m *Mutation) SetOwnerID(id int) {
+	m.owner = &id
+}
+
+// ClearOwner clears the "owner" edge to the User entity.
+func (m *Mutation) ClearOwner() {
+	m.clearedowner = true
+}
+
+// OwnerCleared reports if the "owner" edge to the User entity was cleared.
+func (m *Mutation) OwnerCleared() bool {
+	return m.clearedowner
+}
+
+// OwnerID returns the "owner" edge ID in the mutation.
+func (m *Mutation) OwnerID() (id int, exists bool) {
+	if m.owner != nil {
+		return *m.owner, true
+	}
+	return
+}
+
+// OwnerIDs returns the "owner" edge IDs in the mutation.
+// Note that IDs always returns len(IDs) <= 1 for unique edges, and you should use
+// OwnerID instead. It exists only for internal usage by the builders.
+func (m *Mutation) OwnerIDs() (ids []int) {
+	if id := m.owner; id != nil {
+		ids = append(ids, *id)
+	}
+	return
+}
+
+// ResetOwner resets all changes to the "owner" edge.
+func (m *Mutation) ResetOwner() {
+	m.owner = nil
+	m.clearedowner = false
+}
+
+// Where appends a list predicates to the Mutation builder.
+func (m *Mutation) Where(ps ...predicate.Car) {
+	m.predicates = append(m.predicates, ps...)
+}
+
+// WhereP appends storage-level predicates to the Mutation builder. Using this method,
+// users can use type-assertion to append predicates that do not depend on any generated package.
+func (m *Mutation) WhereP(ps ...func(*sql.Selector)) {
+	p := make([]predicate.Car, len(ps))
+	for i := range ps {
+		p[i] = ps[i]
+	}
+	m.Where(p...)
+}
+
+// Op returns the operation name.
+func (m *Mutation) Op() ent.Op {
+	return m.op
+}
+
+// SetOp allows setting the mutation operation.
+func (m *Mutation) SetOp(op ent.Op) {
+	m.op = op
+}
+
+// Type returns the node type of this mutation (Car).
+func (m *Mutation) Type() string {
+	return m.typ
+}
+
+// Fields returns all fields that were changed during this mutation. Note that in
+// order to get all numeric fields that were incremented/decremented, call
+// AddedFields().
+func (m *Mutation) Fields() []string {
+	fields := make([]string, 0, 1)
+	if m.name != nil {
+		fields = append(fields, FieldName)
+	}
+	return fields
+}
+
+// Field returns the value of a field with the given name. The second boolean
+// return value indicates that this field was not set, or was not defined in the
+// schema.
+func (m *Mutation) Field(name string) (ent.Value, bool) {
+	switch name {
+	case FieldName:
+		return m.Name()
+	}
+	return nil, false
+}
+
+// OldField returns the old value of the field from the database. An error is
+// returned if the mutation operation is not UpdateOne, or the query to the
+// database failed.
+func (m *Mutation) OldField(ctx context.Context, name string) (ent.Value, error) {
+	return nil, fmt.Errorf("unknown Car field %s", name)
+}
+
+// SetField sets the value of a field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) SetField(name string, value ent.Value) error {
+	switch name {
+	case FieldName:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetName(v)
+		return nil
+	}
+	return fmt.Errorf("unknown Car field %s", name)
+}
+
+// AddedFields returns all numeric fields that were incremented/decremented during
+// this mutation.
+func (m *Mutation) AddedFields() []string {
+	return nil
+}
+
+// AddedField returns the numeric value that was incremented/decremented on a field
+// with the given name. The second boolean return value indicates that this field
+// was not set, or was not defined in the schema.
+func (m *Mutation) AddedField(name string) (ent.Value, bool) {
+	return nil, false
+}
+
+// AddField adds the value to the field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) AddField(name string, value ent.Value) error {
+	switch name {
+	}
+	return fmt.Errorf("unknown Car numeric field %s", name)
+}
+
+// ClearedFields returns all nullable fields that were cleared during this
+// mutation.
+func (m *Mutation) ClearedFields() []string {
+	var fields []string
+	if m.FieldCleared(FieldName) {
+		fields = append(fields, FieldName)
+	}
+	return fields
+}
+
+// FieldCleared returns a boolean indicating if a field with the given name was
+// cleared in this mutation.
+func (m *Mutation) FieldCleared(name string) bool {
+	_, ok := m.clearedFields[name]
+	return ok
+}
+
+// ClearField clears the value of the field with the given name. It returns an
+// error if the field is not defined in the schema.
+func (m *Mutation) ClearField(name string) error {
+	switch name {
+	case FieldName:
+		m.ClearName()
+		return nil
+	}
+	return fmt.Errorf("unknown Car nullable field %s", name)
+}
+
+// ResetField resets all changes in the mutation for the field with the given name.
+// It returns an error if the field is not defined in the schema.
+func (m *Mutation) ResetField(name string) error {
+	switch name {
+	case FieldName:
+		m.ResetName()
+		return nil
+	}
+	return fmt.Errorf("unknown Car field %s", name)
+}
+
+// AddedEdges returns all edge names that were set/added in this mutation.
+func (m *Mutation) AddedEdges() []string {
+	edges := make([]string, 0, 1)
+	if m.owner != nil {
+		edges = append(edges, EdgeOwner)
+	}
+	return edges
+}
+
+// AddedIDs returns all IDs (to other nodes) that were added for the given edge
+// name in this mutation.
+func (m *Mutation) AddedIDs(name string) []ent.Value {
+	switch name {
+	case EdgeOwner:
+		if id := m.owner; id != nil {
+			return []ent.Value{*id}
+		}
+	}
+	return nil
+}
+
+// RemovedEdges returns all edge names that were removed in this mutation.
+func (m *Mutation) RemovedEdges() []string {
+	edges := make([]string, 0, 1)
+	return edges
+}
+
+// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
+// the given name in this mutation.
+func (m *Mutation) RemovedIDs(name string) []ent.Value {
+	return nil
+}
+
+// ClearedEdges returns all edge names that were cleared in this mutation.
+func (m *Mutation) ClearedEdges() []string {
+	edges := make([]string, 0, 1)
+	if m.clearedowner {
+		edges = append(edges, EdgeOwner)
+	}
+	return edges
+}
+
+// EdgeCleared returns a boolean which indicates if the edge with the given name
+// was cleared in this mutation.
+func (m *Mutation) EdgeCleared(name string) bool {
+	switch name {
+	case EdgeOwner:
+		return m.clearedowner
+	}
+	return false
+}
+
+// ClearEdge clears the value of the edge with the given name. It returns an error
+// if that edge is not defined in the schema.
+func (m *Mutation) ClearEdge(name string) error {
+	switch name {
+	case EdgeOwner:
+		m.ClearOwner()
+		return nil
+	}
+	return fmt.Errorf("unknown Car unique edge %s", name)
+}
+
+// ResetEdge resets all changes to the edge with the given name in this mutation.
+// It returns an error if the edge is not defined in the schema.
+func (m *Mutation) ResetEdge(name string) error {
+	switch name {
+	case EdgeOwner:
+		m.ResetOwner()
+		return nil
+	}
+	return fmt.Errorf("unknown Car edge %s", name)
+}

entc/integration/migrate/entv2/car/where.go

@@ -0,0 +1,176 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package car
+
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int) predicate.Car {
+	return predicate.Car(sql.FieldEQ(FieldID, id))
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int) predicate.Car {
+	return predicate.Car(sql.FieldEQ(FieldID, id))
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int) predicate.Car {
+	return predicate.Car(sql.FieldNEQ(FieldID, id))
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int) predicate.Car {
+	return predicate.Car(sql.FieldIn(FieldID, ids...))
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int) predicate.Car {
+	return predicate.Car(sql.FieldNotIn(FieldID, ids...))
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int) predicate.Car {
+	return predicate.Car(sql.FieldGT(FieldID, id))
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int) predicate.Car {
+	return predicate.Car(sql.FieldGTE(FieldID, id))
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int) predicate.Car {
+	return predicate.Car(sql.FieldLT(FieldID, id))
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int) predicate.Car {
+	return predicate.Car(sql.FieldLTE(FieldID, id))
+}
+
+// Name applies equality check predicate on the "name" field. It's identical to NameEQ.
+func Name(v string) predicate.Car {
+	return predicate.Car(sql.FieldEQ(FieldName, v))
+}
+
+// NameEQ applies the EQ predicate on the "name" field.
+func NameEQ(v string) predicate.Car {
+	return predicate.Car(sql.FieldEQ(FieldName, v))
+}
+
+// NameNEQ applies the NEQ predicate on the "name" field.
+func NameNEQ(v string) predicate.Car {
+	return predicate.Car(sql.FieldNEQ(FieldName, v))
+}
+
+// NameIn applies the In predicate on the "name" field.
+func NameIn(vs ...string) predicate.Car {
+	return predicate.Car(sql.FieldIn(FieldName, vs...))
+}
+
+// NameNotIn applies the NotIn predicate on the "name" field.
+func NameNotIn(vs ...string) predicate.Car {
+	return predicate.Car(sql.FieldNotIn(FieldName, vs...))
+}
+
+// NameGT applies the GT predicate on the "name" field.
+func NameGT(v string) predicate.Car {
+	return predicate.Car(sql.FieldGT(FieldName, v))
+}
+
+// NameGTE applies the GTE predicate on the "name" field.
+func NameGTE(v string) predicate.Car {
+	return predicate.Car(sql.FieldGTE(FieldName, v))
+}
+
+// NameLT applies the LT predicate on the "name" field.
+func NameLT(v string) predicate.Car {
+	return predicate.Car(sql.FieldLT(FieldName, v))
+}
+
+// NameLTE applies the LTE predicate on the "name" field.
+func NameLTE(v string) predicate.Car {
+	return predicate.Car(sql.FieldLTE(FieldName, v))
+}
+
+// NameContains applies the Contains predicate on the "name" field.
+func NameContains(v string) predicate.Car {
+	return predicate.Car(sql.FieldContains(FieldName, v))
+}
+
+// NameHasPrefix applies the HasPrefix predicate on the "name" field.
+func NameHasPrefix(v string) predicate.Car {
+	return predicate.Car(sql.FieldHasPrefix(FieldName, v))
+}
+
+// NameHasSuffix applies the HasSuffix predicate on the "name" field.
+func NameHasSuffix(v string) predicate.Car {
+	return predicate.Car(sql.FieldHasSuffix(FieldName, v))
+}
+
+// NameIsNil applies the IsNil predicate on the "name" field.
+func NameIsNil() predicate.Car {
+	return predicate.Car(sql.FieldIsNull(FieldName))
+}
+
+// NameNotNil applies the NotNil predicate on the "name" field.
+func NameNotNil() predicate.Car {
+	return predicate.Car(sql.FieldNotNull(FieldName))
+}
+
+// NameEqualFold applies the EqualFold predicate on the "name" field.
+func NameEqualFold(v string) predicate.Car {
+	return predicate.Car(sql.FieldEqualFold(FieldName, v))
+}
+
+// NameContainsFold applies the ContainsFold predicate on the "name" field.
+func NameContainsFold(v string) predicate.Car {
+	return predicate.Car(sql.FieldContainsFold(FieldName, v))
+}
+
+// HasOwner applies the HasEdge predicate on the "owner" edge.
+func HasOwner() predicate.Car {
+	return predicate.Car(func(s *sql.Selector) {
+		step := sqlgraph.NewStep(
+			sqlgraph.From(Table, FieldID),
+			sqlgraph.Edge(sqlgraph.M2O, true, OwnerTable, OwnerColumn),
+		)
+		sqlgraph.HasNeighbors(s, step)
+	})
+}
+
+// HasOwnerWith applies the HasEdge predicate on the "owner" edge with a given conditions (other predicates).
+func HasOwnerWith(preds ...predicate.User) predicate.Car {
+	return predicate.Car(func(s *sql.Selector) {
+		step := newOwnerStep()
+		sqlgraph.HasNeighborsWith(s, step, func(s *sql.Selector) {
+			for _, p := range preds {
+				p(s)
+			}
+		})
+	})
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.Car) predicate.Car {
+	return predicate.Car(sql.AndPredicates(predicates...))
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.Car) predicate.Car {
+	return predicate.Car(sql.OrPredicates(predicates...))
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.Car) predicate.Car {
+	return predicate.Car(sql.NotPredicates(p))
+}

entc/integration/migrate/entv2/car_create.go

@@ -0,0 +1,224 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/car"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// CarCreate is the builder for creating a Car entity.
+type CarCreate struct {
+	config
+	mutation *CarMutation
+	hooks    []Hook
+}
+
+// SetName sets the "name" field.
+func (_c *CarCreate) SetName(v string) *CarCreate {
+	_c.mutation.SetName(v)
+	return _c
+}
+
+// SetNillableName sets the "name" field if the given value is not nil.
+func (_c *CarCreate) SetNillableName(v *string) *CarCreate {
+	if v != nil {
+		_c.SetName(*v)
+	}
+	return _c
+}
+
+// SetOwnerID sets the "owner" edge to the User entity by ID.
+func (_c *CarCreate) SetOwnerID(id int) *CarCreate {
+	_c.mutation.SetOwnerID(id)
+	return _c
+}
+
+// SetOwner sets the "owner" edge to the User entity.
+func (_c *CarCreate) SetOwner(v *User) *CarCreate {
+	return _c.SetOwnerID(v.ID)
+}
+
+// Mutation returns the CarMutation object of the builder.
+func (_c *CarCreate) Mutation() *CarMutation {
+	return _c.mutation
+}
+
+// Save creates the Car in the database.
+func (_c *CarCreate) Save(ctx context.Context) (*Car, error) {
+	return withHooks(ctx, _c.sqlSave, _c.mutation, _c.hooks)
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (_c *CarCreate) SaveX(ctx context.Context) *Car {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *CarCreate) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *CarCreate) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_c *CarCreate) check() error {
+	if len(_c.mutation.OwnerIDs()) == 0 {
+		return &ValidationError{Name: "owner", err: errors.New(`entv2: missing required edge "Car.owner"`)}
+	}
+	return nil
+}
+
+func (_c *CarCreate) sqlSave(ctx context.Context) (*Car, error) {
+	if err := _c.check(); err != nil {
+		return nil, err
+	}
+	_node, _spec := _c.createSpec()
+	if err := sqlgraph.CreateNode(ctx, _c.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	id := _spec.ID.Value.(int64)
+	_node.ID = int(id)
+	_c.mutation.id = &_node.ID
+	_c.mutation.done = true
+	return _node, nil
+}
+
+func (_c *CarCreate) createSpec() (*Car, *sqlgraph.CreateSpec) {
+	var (
+		_node = &Car{config: _c.config}
+		_spec = sqlgraph.NewCreateSpec(car.Table, sqlgraph.NewFieldSpec(car.FieldID, field.TypeInt))
+	)
+	if value, ok := _c.mutation.Name(); ok {
+		_spec.SetField(car.FieldName, field.TypeString, value)
+		_node.Name = value
+	}
+	if nodes := _c.mutation.OwnerIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   car.OwnerTable,
+			Columns: []string{car.OwnerColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_node.user_car = &nodes[0]
+		_spec.Edges = append(_spec.Edges, edge)
+	}
+	return _node, _spec
+}
+
+// CarCreateBulk is the builder for creating many Car entities in bulk.
+type CarCreateBulk struct {
+	config
+	err      error
+	builders []*CarCreate
+}
+
+// Save creates the Car entities in the database.
+func (_c *CarCreateBulk) Save(ctx context.Context) ([]*Car, error) {
+	if _c.err != nil {
+		return nil, _c.err
+	}
+	specs := make([]*sqlgraph.CreateSpec, len(_c.builders))
+	nodes := make([]*Car, len(_c.builders))
+	mutators := make([]Mutator, len(_c.builders))
+	for i := range _c.builders {
+		func(i int, root context.Context) {
+			builder := _c.builders[i]
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*CarMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				var err error
+				nodes[i], specs[i] = builder.createSpec()
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, _c.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, _c.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{msg: err.Error(), wrap: err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				if specs[i].ID.Value != nil {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int(id)
+				}
+				mutation.done = true
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, _c.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_c *CarCreateBulk) SaveX(ctx context.Context) []*Car {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *CarCreateBulk) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *CarCreateBulk) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/car_delete.go

@@ -0,0 +1,92 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/car"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// CarDelete is the builder for deleting a Car entity.
+type CarDelete struct {
+	config
+	hooks    []Hook
+	mutation *CarMutation
+}
+
+// Where appends a list predicates to the CarDelete builder.
+func (_d *CarDelete) Where(ps ...predicate.Car) *CarDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *CarDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *CarDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *CarDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(car.Table, sqlgraph.NewFieldSpec(car.FieldID, field.TypeInt))
+	if ps := _d.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// CarDeleteOne is the builder for deleting a single Car entity.
+type CarDeleteOne struct {
+	_d *CarDelete
+}
+
+// Where appends a list predicates to the CarDelete builder.
+func (_d *CarDeleteOne) Where(ps ...predicate.Car) *CarDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *CarDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{car.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *CarDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/car_query.go

@@ -0,0 +1,618 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/car"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// CarQuery is the builder for querying Car entities.
+type CarQuery struct {
+	config
+	ctx        *QueryContext
+	order      []car.OrderOption
+	inters     []Interceptor
+	predicates []predicate.Car
+	withOwner  *UserQuery
+	withFKs    bool
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the CarQuery builder.
+func (_q *CarQuery) Where(ps ...predicate.Car) *CarQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *CarQuery) Limit(limit int) *CarQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *CarQuery) Offset(offset int) *CarQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *CarQuery) Unique(unique bool) *CarQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *CarQuery) Order(o ...car.OrderOption) *CarQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// QueryOwner chains the current query on the "owner" edge.
+func (_q *CarQuery) QueryOwner() *UserQuery {
+	query := (&UserClient{config: _q.config}).Query()
+	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
+		if err := _q.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		selector := _q.sqlQuery(ctx)
+		if err := selector.Err(); err != nil {
+			return nil, err
+		}
+		step := sqlgraph.NewStep(
+			sqlgraph.From(car.Table, car.FieldID, selector),
+			sqlgraph.To(user.Table, user.FieldID),
+			sqlgraph.Edge(sqlgraph.M2O, true, car.OwnerTable, car.OwnerColumn),
+		)
+		fromU = sqlgraph.SetNeighbors(_q.driver.Dialect(), step)
+		return fromU, nil
+	}
+	return query
+}
+
+// First returns the first Car entity from the query.
+// Returns a *NotFoundError when no Car was found.
+func (_q *CarQuery) First(ctx context.Context) (*Car, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{car.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *CarQuery) FirstX(ctx context.Context) *Car {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first Car ID from the query.
+// Returns a *NotFoundError when no Car ID was found.
+func (_q *CarQuery) FirstID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{car.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *CarQuery) FirstIDX(ctx context.Context) int {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single Car entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one Car entity is found.
+// Returns a *NotFoundError when no Car entities are found.
+func (_q *CarQuery) Only(ctx context.Context) (*Car, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{car.Label}
+	default:
+		return nil, &NotSingularError{car.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *CarQuery) OnlyX(ctx context.Context) *Car {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only Car ID in the query.
+// Returns a *NotSingularError when more than one Car ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *CarQuery) OnlyID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{car.Label}
+	default:
+		err = &NotSingularError{car.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *CarQuery) OnlyIDX(ctx context.Context) int {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of Cars.
+func (_q *CarQuery) All(ctx context.Context) ([]*Car, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*Car, *CarQuery]()
+	return withInterceptors[[]*Car](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *CarQuery) AllX(ctx context.Context) []*Car {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of Car IDs.
+func (_q *CarQuery) IDs(ctx context.Context) (ids []int, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(car.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *CarQuery) IDsX(ctx context.Context) []int {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *CarQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*CarQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *CarQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *CarQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("entv2: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *CarQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the CarQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *CarQuery) Clone() *CarQuery {
+	if _q == nil {
+		return nil
+	}
+	return &CarQuery{
+		config:     _q.config,
+		ctx:        _q.ctx.Clone(),
+		order:      append([]car.OrderOption{}, _q.order...),
+		inters:     append([]Interceptor{}, _q.inters...),
+		predicates: append([]predicate.Car{}, _q.predicates...),
+		withOwner:  _q.withOwner.Clone(),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// WithOwner tells the query-builder to eager-load the nodes that are connected to
+// the "owner" edge. The optional arguments are used to configure the query builder of the edge.
+func (_q *CarQuery) WithOwner(opts ...func(*UserQuery)) *CarQuery {
+	query := (&UserClient{config: _q.config}).Query()
+	for _, opt := range opts {
+		opt(query)
+	}
+	_q.withOwner = query
+	return _q
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		Name string `json:"name,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.Car.Query().
+//		GroupBy(car.FieldName).
+//		Aggregate(entv2.Count()).
+//		Scan(ctx, &v)
+func (_q *CarQuery) GroupBy(field string, fields ...string) *CarGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &CarGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = car.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		Name string `json:"name,omitempty"`
+//	}
+//
+//	client.Car.Query().
+//		Select(car.FieldName).
+//		Scan(ctx, &v)
+func (_q *CarQuery) Select(fields ...string) *CarSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &CarSelect{CarQuery: _q}
+	sbuild.label = car.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a CarSelect configured with the given aggregations.
+func (_q *CarQuery) Aggregate(fns ...AggregateFunc) *CarSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *CarQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("entv2: uninitialized interceptor (forgotten import entv2/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !car.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *CarQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Car, error) {
+	var (
+		nodes       = []*Car{}
+		withFKs     = _q.withFKs
+		_spec       = _q.querySpec()
+		loadedTypes = [1]bool{
+			_q.withOwner != nil,
+		}
+	)
+	if _q.withOwner != nil {
+		withFKs = true
+	}
+	if withFKs {
+		_spec.Node.Columns = append(_spec.Node.Columns, car.ForeignKeys...)
+	}
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*Car).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &Car{config: _q.config}
+		nodes = append(nodes, node)
+		node.Edges.loadedTypes = loadedTypes
+		return node.assignValues(columns, values)
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	if query := _q.withOwner; query != nil {
+		if err := _q.loadOwner(ctx, query, nodes, nil,
+			func(n *Car, e *User) { n.Edges.Owner = e }); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+func (_q *CarQuery) loadOwner(ctx context.Context, query *UserQuery, nodes []*Car, init func(*Car), assign func(*Car, *User)) error {
+	ids := make([]int, 0, len(nodes))
+	nodeids := make(map[int][]*Car)
+	for i := range nodes {
+		if nodes[i].user_car == nil {
+			continue
+		}
+		fk := *nodes[i].user_car
+		if _, ok := nodeids[fk]; !ok {
+			ids = append(ids, fk)
+		}
+		nodeids[fk] = append(nodeids[fk], nodes[i])
+	}
+	if len(ids) == 0 {
+		return nil
+	}
+	query.Where(user.IDIn(ids...))
+	neighbors, err := query.All(ctx)
+	if err != nil {
+		return err
+	}
+	for _, n := range neighbors {
+		nodes, ok := nodeids[n.ID]
+		if !ok {
+			return fmt.Errorf(`unexpected foreign-key "user_car" returned %v`, n.ID)
+		}
+		for i := range nodes {
+			assign(nodes[i], n)
+		}
+	}
+	return nil
+}
+
+func (_q *CarQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *CarQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(car.Table, car.Columns, sqlgraph.NewFieldSpec(car.FieldID, field.TypeInt))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, car.FieldID)
+		for i := range fields {
+			if fields[i] != car.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *CarQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(car.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = car.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// CarGroupBy is the group-by builder for Car entities.
+type CarGroupBy struct {
+	selector
+	build *CarQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *CarGroupBy) Aggregate(fns ...AggregateFunc) *CarGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *CarGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*CarQuery, *CarGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *CarGroupBy) sqlScan(ctx context.Context, root *CarQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// CarSelect is the builder for selecting fields of Car entities.
+type CarSelect struct {
+	*CarQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *CarSelect) Aggregate(fns ...AggregateFunc) *CarSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *CarSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*CarQuery, *CarSelect](ctx, _s.CarQuery, _s, _s.inters, v)
+}
+
+func (_s *CarSelect) sqlScan(ctx context.Context, root *CarQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

entc/integration/migrate/entv2/car_update.go

@@ -0,0 +1,346 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/car"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// CarUpdate is the builder for updating Car entities.
+type CarUpdate struct {
+	config
+	hooks    []Hook
+	mutation *CarMutation
+}
+
+// Where appends a list predicates to the CarUpdate builder.
+func (_u *CarUpdate) Where(ps ...predicate.Car) *CarUpdate {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// SetName sets the "name" field.
+func (_u *CarUpdate) SetName(v string) *CarUpdate {
+	_u.mutation.SetName(v)
+	return _u
+}
+
+// SetNillableName sets the "name" field if the given value is not nil.
+func (_u *CarUpdate) SetNillableName(v *string) *CarUpdate {
+	if v != nil {
+		_u.SetName(*v)
+	}
+	return _u
+}
+
+// ClearName clears the value of the "name" field.
+func (_u *CarUpdate) ClearName() *CarUpdate {
+	_u.mutation.ClearName()
+	return _u
+}
+
+// SetOwnerID sets the "owner" edge to the User entity by ID.
+func (_u *CarUpdate) SetOwnerID(id int) *CarUpdate {
+	_u.mutation.SetOwnerID(id)
+	return _u
+}
+
+// SetOwner sets the "owner" edge to the User entity.
+func (_u *CarUpdate) SetOwner(v *User) *CarUpdate {
+	return _u.SetOwnerID(v.ID)
+}
+
+// Mutation returns the CarMutation object of the builder.
+func (_u *CarUpdate) Mutation() *CarMutation {
+	return _u.mutation
+}
+
+// ClearOwner clears the "owner" edge to the User entity.
+func (_u *CarUpdate) ClearOwner() *CarUpdate {
+	_u.mutation.ClearOwner()
+	return _u
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (_u *CarUpdate) Save(ctx context.Context) (int, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *CarUpdate) SaveX(ctx context.Context) int {
+	affected, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (_u *CarUpdate) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *CarUpdate) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_u *CarUpdate) check() error {
+	if _u.mutation.OwnerCleared() && len(_u.mutation.OwnerIDs()) > 0 {
+		return errors.New(`entv2: clearing a required unique edge "Car.owner"`)
+	}
+	return nil
+}
+
+func (_u *CarUpdate) sqlSave(ctx context.Context) (_node int, err error) {
+	if err := _u.check(); err != nil {
+		return _node, err
+	}
+	_spec := sqlgraph.NewUpdateSpec(car.Table, car.Columns, sqlgraph.NewFieldSpec(car.FieldID, field.TypeInt))
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Name(); ok {
+		_spec.SetField(car.FieldName, field.TypeString, value)
+	}
+	if _u.mutation.NameCleared() {
+		_spec.ClearField(car.FieldName, field.TypeString)
+	}
+	if _u.mutation.OwnerCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   car.OwnerTable,
+			Columns: []string{car.OwnerColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.OwnerIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   car.OwnerTable,
+			Columns: []string{car.OwnerColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{car.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return 0, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}
+
+// CarUpdateOne is the builder for updating a single Car entity.
+type CarUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *CarMutation
+}
+
+// SetName sets the "name" field.
+func (_u *CarUpdateOne) SetName(v string) *CarUpdateOne {
+	_u.mutation.SetName(v)
+	return _u
+}
+
+// SetNillableName sets the "name" field if the given value is not nil.
+func (_u *CarUpdateOne) SetNillableName(v *string) *CarUpdateOne {
+	if v != nil {
+		_u.SetName(*v)
+	}
+	return _u
+}
+
+// ClearName clears the value of the "name" field.
+func (_u *CarUpdateOne) ClearName() *CarUpdateOne {
+	_u.mutation.ClearName()
+	return _u
+}
+
+// SetOwnerID sets the "owner" edge to the User entity by ID.
+func (_u *CarUpdateOne) SetOwnerID(id int) *CarUpdateOne {
+	_u.mutation.SetOwnerID(id)
+	return _u
+}
+
+// SetOwner sets the "owner" edge to the User entity.
+func (_u *CarUpdateOne) SetOwner(v *User) *CarUpdateOne {
+	return _u.SetOwnerID(v.ID)
+}
+
+// Mutation returns the CarMutation object of the builder.
+func (_u *CarUpdateOne) Mutation() *CarMutation {
+	return _u.mutation
+}
+
+// ClearOwner clears the "owner" edge to the User entity.
+func (_u *CarUpdateOne) ClearOwner() *CarUpdateOne {
+	_u.mutation.ClearOwner()
+	return _u
+}
+
+// Where appends a list predicates to the CarUpdate builder.
+func (_u *CarUpdateOne) Where(ps ...predicate.Car) *CarUpdateOne {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (_u *CarUpdateOne) Select(field string, fields ...string) *CarUpdateOne {
+	_u.fields = append([]string{field}, fields...)
+	return _u
+}
+
+// Save executes the query and returns the updated Car entity.
+func (_u *CarUpdateOne) Save(ctx context.Context) (*Car, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *CarUpdateOne) SaveX(ctx context.Context) *Car {
+	node, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (_u *CarUpdateOne) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *CarUpdateOne) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_u *CarUpdateOne) check() error {
+	if _u.mutation.OwnerCleared() && len(_u.mutation.OwnerIDs()) > 0 {
+		return errors.New(`entv2: clearing a required unique edge "Car.owner"`)
+	}
+	return nil
+}
+
+func (_u *CarUpdateOne) sqlSave(ctx context.Context) (_node *Car, err error) {
+	if err := _u.check(); err != nil {
+		return _node, err
+	}
+	_spec := sqlgraph.NewUpdateSpec(car.Table, car.Columns, sqlgraph.NewFieldSpec(car.FieldID, field.TypeInt))
+	id, ok := _u.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "id", err: errors.New(`entv2: missing "Car.id" for update`)}
+	}
+	_spec.Node.ID.Value = id
+	if fields := _u.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, car.FieldID)
+		for _, f := range fields {
+			if !car.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+			}
+			if f != car.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Name(); ok {
+		_spec.SetField(car.FieldName, field.TypeString, value)
+	}
+	if _u.mutation.NameCleared() {
+		_spec.ClearField(car.FieldName, field.TypeString)
+	}
+	if _u.mutation.OwnerCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   car.OwnerTable,
+			Columns: []string{car.OwnerColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.OwnerIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   car.OwnerTable,
+			Columns: []string{car.OwnerColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	_node = &Car{config: _u.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{car.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}

entc/integration/migrate/entv2/conversion.go

@@ -0,0 +1,195 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"fmt"
+	"strings"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/conversion"
+)
+
+// Conversion is the model entity for the Conversion schema.
+type Conversion struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int `json:"id,omitempty"`
+	// Name holds the value of the "name" field.
+	Name string `json:"name,omitempty"`
+	// Int8ToString holds the value of the "int8_to_string" field.
+	Int8ToString string `json:"int8_to_string,omitempty"`
+	// Uint8ToString holds the value of the "uint8_to_string" field.
+	Uint8ToString string `json:"uint8_to_string,omitempty"`
+	// Int16ToString holds the value of the "int16_to_string" field.
+	Int16ToString string `json:"int16_to_string,omitempty"`
+	// Uint16ToString holds the value of the "uint16_to_string" field.
+	Uint16ToString string `json:"uint16_to_string,omitempty"`
+	// Int32ToString holds the value of the "int32_to_string" field.
+	Int32ToString string `json:"int32_to_string,omitempty"`
+	// Uint32ToString holds the value of the "uint32_to_string" field.
+	Uint32ToString string `json:"uint32_to_string,omitempty"`
+	// Int64ToString holds the value of the "int64_to_string" field.
+	Int64ToString string `json:"int64_to_string,omitempty"`
+	// Uint64ToString holds the value of the "uint64_to_string" field.
+	Uint64ToString string `json:"uint64_to_string,omitempty"`
+	selectValues   sql.SelectValues
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*Conversion) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case conversion.FieldID:
+			values[i] = new(sql.NullInt64)
+		case conversion.FieldName, conversion.FieldInt8ToString, conversion.FieldUint8ToString, conversion.FieldInt16ToString, conversion.FieldUint16ToString, conversion.FieldInt32ToString, conversion.FieldUint32ToString, conversion.FieldInt64ToString, conversion.FieldUint64ToString:
+			values[i] = new(sql.NullString)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the Conversion fields.
+func (_m *Conversion) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case conversion.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int(value.Int64)
+		case conversion.FieldName:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field name", values[i])
+			} else if value.Valid {
+				_m.Name = value.String
+			}
+		case conversion.FieldInt8ToString:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field int8_to_string", values[i])
+			} else if value.Valid {
+				_m.Int8ToString = value.String
+			}
+		case conversion.FieldUint8ToString:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field uint8_to_string", values[i])
+			} else if value.Valid {
+				_m.Uint8ToString = value.String
+			}
+		case conversion.FieldInt16ToString:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field int16_to_string", values[i])
+			} else if value.Valid {
+				_m.Int16ToString = value.String
+			}
+		case conversion.FieldUint16ToString:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field uint16_to_string", values[i])
+			} else if value.Valid {
+				_m.Uint16ToString = value.String
+			}
+		case conversion.FieldInt32ToString:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field int32_to_string", values[i])
+			} else if value.Valid {
+				_m.Int32ToString = value.String
+			}
+		case conversion.FieldUint32ToString:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field uint32_to_string", values[i])
+			} else if value.Valid {
+				_m.Uint32ToString = value.String
+			}
+		case conversion.FieldInt64ToString:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field int64_to_string", values[i])
+			} else if value.Valid {
+				_m.Int64ToString = value.String
+			}
+		case conversion.FieldUint64ToString:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field uint64_to_string", values[i])
+			} else if value.Valid {
+				_m.Uint64ToString = value.String
+			}
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the Conversion.
+// This includes values selected through modifiers, order, etc.
+func (_m *Conversion) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// Update returns a builder for updating this Conversion.
+// Note that you need to call Conversion.Unwrap() before calling this method if this Conversion
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *Conversion) Update() *ConversionUpdateOne {
+	return NewConversionClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the Conversion entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *Conversion) Unwrap() *Conversion {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("entv2: Conversion is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *Conversion) String() string {
+	var builder strings.Builder
+	builder.WriteString("Conversion(")
+	builder.WriteString(fmt.Sprintf("id=%v, ", _m.ID))
+	builder.WriteString("name=")
+	builder.WriteString(_m.Name)
+	builder.WriteString(", ")
+	builder.WriteString("int8_to_string=")
+	builder.WriteString(_m.Int8ToString)
+	builder.WriteString(", ")
+	builder.WriteString("uint8_to_string=")
+	builder.WriteString(_m.Uint8ToString)
+	builder.WriteString(", ")
+	builder.WriteString("int16_to_string=")
+	builder.WriteString(_m.Int16ToString)
+	builder.WriteString(", ")
+	builder.WriteString("uint16_to_string=")
+	builder.WriteString(_m.Uint16ToString)
+	builder.WriteString(", ")
+	builder.WriteString("int32_to_string=")
+	builder.WriteString(_m.Int32ToString)
+	builder.WriteString(", ")
+	builder.WriteString("uint32_to_string=")
+	builder.WriteString(_m.Uint32ToString)
+	builder.WriteString(", ")
+	builder.WriteString("int64_to_string=")
+	builder.WriteString(_m.Int64ToString)
+	builder.WriteString(", ")
+	builder.WriteString("uint64_to_string=")
+	builder.WriteString(_m.Uint64ToString)
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// Conversions is a parsable slice of Conversion.
+type Conversions []*Conversion

entc/integration/migrate/entv2/conversion/conversion.go

@@ -0,0 +1,115 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package conversion
+
+import (
+	"entgo.io/ent/dialect/sql"
+)
+
+const (
+	// Label holds the string label denoting the conversion type in the database.
+	Label = "conversion"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldName holds the string denoting the name field in the database.
+	FieldName = "name"
+	// FieldInt8ToString holds the string denoting the int8_to_string field in the database.
+	FieldInt8ToString = "int8_to_string"
+	// FieldUint8ToString holds the string denoting the uint8_to_string field in the database.
+	FieldUint8ToString = "uint8_to_string"
+	// FieldInt16ToString holds the string denoting the int16_to_string field in the database.
+	FieldInt16ToString = "int16_to_string"
+	// FieldUint16ToString holds the string denoting the uint16_to_string field in the database.
+	FieldUint16ToString = "uint16_to_string"
+	// FieldInt32ToString holds the string denoting the int32_to_string field in the database.
+	FieldInt32ToString = "int32_to_string"
+	// FieldUint32ToString holds the string denoting the uint32_to_string field in the database.
+	FieldUint32ToString = "uint32_to_string"
+	// FieldInt64ToString holds the string denoting the int64_to_string field in the database.
+	FieldInt64ToString = "int64_to_string"
+	// FieldUint64ToString holds the string denoting the uint64_to_string field in the database.
+	FieldUint64ToString = "uint64_to_string"
+	// Table holds the table name of the conversion in the database.
+	Table = "conversions"
+)
+
+// Columns holds all SQL columns for conversion fields.
+var Columns = []string{
+	FieldID,
+	FieldName,
+	FieldInt8ToString,
+	FieldUint8ToString,
+	FieldInt16ToString,
+	FieldUint16ToString,
+	FieldInt32ToString,
+	FieldUint32ToString,
+	FieldInt64ToString,
+	FieldUint64ToString,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+// OrderOption defines the ordering options for the Conversion queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByName orders the results by the name field.
+func ByName(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldName, opts...).ToFunc()
+}
+
+// ByInt8ToString orders the results by the int8_to_string field.
+func ByInt8ToString(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldInt8ToString, opts...).ToFunc()
+}
+
+// ByUint8ToString orders the results by the uint8_to_string field.
+func ByUint8ToString(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldUint8ToString, opts...).ToFunc()
+}
+
+// ByInt16ToString orders the results by the int16_to_string field.
+func ByInt16ToString(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldInt16ToString, opts...).ToFunc()
+}
+
+// ByUint16ToString orders the results by the uint16_to_string field.
+func ByUint16ToString(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldUint16ToString, opts...).ToFunc()
+}
+
+// ByInt32ToString orders the results by the int32_to_string field.
+func ByInt32ToString(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldInt32ToString, opts...).ToFunc()
+}
+
+// ByUint32ToString orders the results by the uint32_to_string field.
+func ByUint32ToString(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldUint32ToString, opts...).ToFunc()
+}
+
+// ByInt64ToString orders the results by the int64_to_string field.
+func ByInt64ToString(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldInt64ToString, opts...).ToFunc()
+}
+
+// ByUint64ToString orders the results by the uint64_to_string field.
+func ByUint64ToString(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldUint64ToString, opts...).ToFunc()
+}

entc/integration/migrate/entv2/conversion/mutation.go

@@ -0,0 +1,687 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package conversion
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// Mutation represents an operation that mutates the Conversion nodes in the graph.
+type Mutation struct {
+	op               ent.Op
+	typ              string
+	name             *string
+	int8_to_string   *string
+	uint8_to_string  *string
+	int16_to_string  *string
+	uint16_to_string *string
+	int32_to_string  *string
+	uint32_to_string *string
+	int64_to_string  *string
+	uint64_to_string *string
+	clearedFields    map[string]struct{}
+	predicates       []predicate.Conversion
+}
+
+// NewMutation creates a new Mutation for the Conversion entity.
+func NewMutation(op ent.Op) *Mutation {
+	return &Mutation{
+		op:            op,
+		typ:           "Conversion",
+		clearedFields: make(map[string]struct{}),
+	}
+}
+
+// Predicates returns the list of predicates set on the mutation.
+func (m *Mutation) Predicates() []predicate.Conversion {
+	return m.predicates
+}
+
+// SetName sets the "name" field.
+func (m *Mutation) SetName(s string) {
+	m.name = &s
+}
+
+// Name returns the value of the "name" field in the mutation.
+func (m *Mutation) Name() (r string, exists bool) {
+	v := m.name
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearName clears the value of the "name" field.
+func (m *Mutation) ClearName() {
+	m.name = nil
+	m.clearedFields[FieldName] = struct{}{}
+}
+
+// NameCleared returns if the "name" field was cleared in this mutation.
+func (m *Mutation) NameCleared() bool {
+	_, ok := m.clearedFields[FieldName]
+	return ok
+}
+
+// ResetName resets all changes to the "name" field.
+func (m *Mutation) ResetName() {
+	m.name = nil
+	delete(m.clearedFields, FieldName)
+}
+
+// SetInt8ToString sets the "int8_to_string" field.
+func (m *Mutation) SetInt8ToString(s string) {
+	m.int8_to_string = &s
+}
+
+// Int8ToString returns the value of the "int8_to_string" field in the mutation.
+func (m *Mutation) Int8ToString() (r string, exists bool) {
+	v := m.int8_to_string
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearInt8ToString clears the value of the "int8_to_string" field.
+func (m *Mutation) ClearInt8ToString() {
+	m.int8_to_string = nil
+	m.clearedFields[FieldInt8ToString] = struct{}{}
+}
+
+// Int8ToStringCleared returns if the "int8_to_string" field was cleared in this mutation.
+func (m *Mutation) Int8ToStringCleared() bool {
+	_, ok := m.clearedFields[FieldInt8ToString]
+	return ok
+}
+
+// ResetInt8ToString resets all changes to the "int8_to_string" field.
+func (m *Mutation) ResetInt8ToString() {
+	m.int8_to_string = nil
+	delete(m.clearedFields, FieldInt8ToString)
+}
+
+// SetUint8ToString sets the "uint8_to_string" field.
+func (m *Mutation) SetUint8ToString(s string) {
+	m.uint8_to_string = &s
+}
+
+// Uint8ToString returns the value of the "uint8_to_string" field in the mutation.
+func (m *Mutation) Uint8ToString() (r string, exists bool) {
+	v := m.uint8_to_string
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearUint8ToString clears the value of the "uint8_to_string" field.
+func (m *Mutation) ClearUint8ToString() {
+	m.uint8_to_string = nil
+	m.clearedFields[FieldUint8ToString] = struct{}{}
+}
+
+// Uint8ToStringCleared returns if the "uint8_to_string" field was cleared in this mutation.
+func (m *Mutation) Uint8ToStringCleared() bool {
+	_, ok := m.clearedFields[FieldUint8ToString]
+	return ok
+}
+
+// ResetUint8ToString resets all changes to the "uint8_to_string" field.
+func (m *Mutation) ResetUint8ToString() {
+	m.uint8_to_string = nil
+	delete(m.clearedFields, FieldUint8ToString)
+}
+
+// SetInt16ToString sets the "int16_to_string" field.
+func (m *Mutation) SetInt16ToString(s string) {
+	m.int16_to_string = &s
+}
+
+// Int16ToString returns the value of the "int16_to_string" field in the mutation.
+func (m *Mutation) Int16ToString() (r string, exists bool) {
+	v := m.int16_to_string
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearInt16ToString clears the value of the "int16_to_string" field.
+func (m *Mutation) ClearInt16ToString() {
+	m.int16_to_string = nil
+	m.clearedFields[FieldInt16ToString] = struct{}{}
+}
+
+// Int16ToStringCleared returns if the "int16_to_string" field was cleared in this mutation.
+func (m *Mutation) Int16ToStringCleared() bool {
+	_, ok := m.clearedFields[FieldInt16ToString]
+	return ok
+}
+
+// ResetInt16ToString resets all changes to the "int16_to_string" field.
+func (m *Mutation) ResetInt16ToString() {
+	m.int16_to_string = nil
+	delete(m.clearedFields, FieldInt16ToString)
+}
+
+// SetUint16ToString sets the "uint16_to_string" field.
+func (m *Mutation) SetUint16ToString(s string) {
+	m.uint16_to_string = &s
+}
+
+// Uint16ToString returns the value of the "uint16_to_string" field in the mutation.
+func (m *Mutation) Uint16ToString() (r string, exists bool) {
+	v := m.uint16_to_string
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearUint16ToString clears the value of the "uint16_to_string" field.
+func (m *Mutation) ClearUint16ToString() {
+	m.uint16_to_string = nil
+	m.clearedFields[FieldUint16ToString] = struct{}{}
+}
+
+// Uint16ToStringCleared returns if the "uint16_to_string" field was cleared in this mutation.
+func (m *Mutation) Uint16ToStringCleared() bool {
+	_, ok := m.clearedFields[FieldUint16ToString]
+	return ok
+}
+
+// ResetUint16ToString resets all changes to the "uint16_to_string" field.
+func (m *Mutation) ResetUint16ToString() {
+	m.uint16_to_string = nil
+	delete(m.clearedFields, FieldUint16ToString)
+}
+
+// SetInt32ToString sets the "int32_to_string" field.
+func (m *Mutation) SetInt32ToString(s string) {
+	m.int32_to_string = &s
+}
+
+// Int32ToString returns the value of the "int32_to_string" field in the mutation.
+func (m *Mutation) Int32ToString() (r string, exists bool) {
+	v := m.int32_to_string
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearInt32ToString clears the value of the "int32_to_string" field.
+func (m *Mutation) ClearInt32ToString() {
+	m.int32_to_string = nil
+	m.clearedFields[FieldInt32ToString] = struct{}{}
+}
+
+// Int32ToStringCleared returns if the "int32_to_string" field was cleared in this mutation.
+func (m *Mutation) Int32ToStringCleared() bool {
+	_, ok := m.clearedFields[FieldInt32ToString]
+	return ok
+}
+
+// ResetInt32ToString resets all changes to the "int32_to_string" field.
+func (m *Mutation) ResetInt32ToString() {
+	m.int32_to_string = nil
+	delete(m.clearedFields, FieldInt32ToString)
+}
+
+// SetUint32ToString sets the "uint32_to_string" field.
+func (m *Mutation) SetUint32ToString(s string) {
+	m.uint32_to_string = &s
+}
+
+// Uint32ToString returns the value of the "uint32_to_string" field in the mutation.
+func (m *Mutation) Uint32ToString() (r string, exists bool) {
+	v := m.uint32_to_string
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearUint32ToString clears the value of the "uint32_to_string" field.
+func (m *Mutation) ClearUint32ToString() {
+	m.uint32_to_string = nil
+	m.clearedFields[FieldUint32ToString] = struct{}{}
+}
+
+// Uint32ToStringCleared returns if the "uint32_to_string" field was cleared in this mutation.
+func (m *Mutation) Uint32ToStringCleared() bool {
+	_, ok := m.clearedFields[FieldUint32ToString]
+	return ok
+}
+
+// ResetUint32ToString resets all changes to the "uint32_to_string" field.
+func (m *Mutation) ResetUint32ToString() {
+	m.uint32_to_string = nil
+	delete(m.clearedFields, FieldUint32ToString)
+}
+
+// SetInt64ToString sets the "int64_to_string" field.
+func (m *Mutation) SetInt64ToString(s string) {
+	m.int64_to_string = &s
+}
+
+// Int64ToString returns the value of the "int64_to_string" field in the mutation.
+func (m *Mutation) Int64ToString() (r string, exists bool) {
+	v := m.int64_to_string
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearInt64ToString clears the value of the "int64_to_string" field.
+func (m *Mutation) ClearInt64ToString() {
+	m.int64_to_string = nil
+	m.clearedFields[FieldInt64ToString] = struct{}{}
+}
+
+// Int64ToStringCleared returns if the "int64_to_string" field was cleared in this mutation.
+func (m *Mutation) Int64ToStringCleared() bool {
+	_, ok := m.clearedFields[FieldInt64ToString]
+	return ok
+}
+
+// ResetInt64ToString resets all changes to the "int64_to_string" field.
+func (m *Mutation) ResetInt64ToString() {
+	m.int64_to_string = nil
+	delete(m.clearedFields, FieldInt64ToString)
+}
+
+// SetUint64ToString sets the "uint64_to_string" field.
+func (m *Mutation) SetUint64ToString(s string) {
+	m.uint64_to_string = &s
+}
+
+// Uint64ToString returns the value of the "uint64_to_string" field in the mutation.
+func (m *Mutation) Uint64ToString() (r string, exists bool) {
+	v := m.uint64_to_string
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearUint64ToString clears the value of the "uint64_to_string" field.
+func (m *Mutation) ClearUint64ToString() {
+	m.uint64_to_string = nil
+	m.clearedFields[FieldUint64ToString] = struct{}{}
+}
+
+// Uint64ToStringCleared returns if the "uint64_to_string" field was cleared in this mutation.
+func (m *Mutation) Uint64ToStringCleared() bool {
+	_, ok := m.clearedFields[FieldUint64ToString]
+	return ok
+}
+
+// ResetUint64ToString resets all changes to the "uint64_to_string" field.
+func (m *Mutation) ResetUint64ToString() {
+	m.uint64_to_string = nil
+	delete(m.clearedFields, FieldUint64ToString)
+}
+
+// Where appends a list predicates to the Mutation builder.
+func (m *Mutation) Where(ps ...predicate.Conversion) {
+	m.predicates = append(m.predicates, ps...)
+}
+
+// WhereP appends storage-level predicates to the Mutation builder. Using this method,
+// users can use type-assertion to append predicates that do not depend on any generated package.
+func (m *Mutation) WhereP(ps ...func(*sql.Selector)) {
+	p := make([]predicate.Conversion, len(ps))
+	for i := range ps {
+		p[i] = ps[i]
+	}
+	m.Where(p...)
+}
+
+// Op returns the operation name.
+func (m *Mutation) Op() ent.Op {
+	return m.op
+}
+
+// SetOp allows setting the mutation operation.
+func (m *Mutation) SetOp(op ent.Op) {
+	m.op = op
+}
+
+// Type returns the node type of this mutation (Conversion).
+func (m *Mutation) Type() string {
+	return m.typ
+}
+
+// Fields returns all fields that were changed during this mutation. Note that in
+// order to get all numeric fields that were incremented/decremented, call
+// AddedFields().
+func (m *Mutation) Fields() []string {
+	fields := make([]string, 0, 9)
+	if m.name != nil {
+		fields = append(fields, FieldName)
+	}
+	if m.int8_to_string != nil {
+		fields = append(fields, FieldInt8ToString)
+	}
+	if m.uint8_to_string != nil {
+		fields = append(fields, FieldUint8ToString)
+	}
+	if m.int16_to_string != nil {
+		fields = append(fields, FieldInt16ToString)
+	}
+	if m.uint16_to_string != nil {
+		fields = append(fields, FieldUint16ToString)
+	}
+	if m.int32_to_string != nil {
+		fields = append(fields, FieldInt32ToString)
+	}
+	if m.uint32_to_string != nil {
+		fields = append(fields, FieldUint32ToString)
+	}
+	if m.int64_to_string != nil {
+		fields = append(fields, FieldInt64ToString)
+	}
+	if m.uint64_to_string != nil {
+		fields = append(fields, FieldUint64ToString)
+	}
+	return fields
+}
+
+// Field returns the value of a field with the given name. The second boolean
+// return value indicates that this field was not set, or was not defined in the
+// schema.
+func (m *Mutation) Field(name string) (ent.Value, bool) {
+	switch name {
+	case FieldName:
+		return m.Name()
+	case FieldInt8ToString:
+		return m.Int8ToString()
+	case FieldUint8ToString:
+		return m.Uint8ToString()
+	case FieldInt16ToString:
+		return m.Int16ToString()
+	case FieldUint16ToString:
+		return m.Uint16ToString()
+	case FieldInt32ToString:
+		return m.Int32ToString()
+	case FieldUint32ToString:
+		return m.Uint32ToString()
+	case FieldInt64ToString:
+		return m.Int64ToString()
+	case FieldUint64ToString:
+		return m.Uint64ToString()
+	}
+	return nil, false
+}
+
+// OldField returns the old value of the field from the database. An error is
+// returned if the mutation operation is not UpdateOne, or the query to the
+// database failed.
+func (m *Mutation) OldField(ctx context.Context, name string) (ent.Value, error) {
+	return nil, fmt.Errorf("unknown Conversion field %s", name)
+}
+
+// SetField sets the value of a field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) SetField(name string, value ent.Value) error {
+	switch name {
+	case FieldName:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetName(v)
+		return nil
+	case FieldInt8ToString:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetInt8ToString(v)
+		return nil
+	case FieldUint8ToString:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetUint8ToString(v)
+		return nil
+	case FieldInt16ToString:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetInt16ToString(v)
+		return nil
+	case FieldUint16ToString:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetUint16ToString(v)
+		return nil
+	case FieldInt32ToString:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetInt32ToString(v)
+		return nil
+	case FieldUint32ToString:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetUint32ToString(v)
+		return nil
+	case FieldInt64ToString:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetInt64ToString(v)
+		return nil
+	case FieldUint64ToString:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetUint64ToString(v)
+		return nil
+	}
+	return fmt.Errorf("unknown Conversion field %s", name)
+}
+
+// AddedFields returns all numeric fields that were incremented/decremented during
+// this mutation.
+func (m *Mutation) AddedFields() []string {
+	return nil
+}
+
+// AddedField returns the numeric value that was incremented/decremented on a field
+// with the given name. The second boolean return value indicates that this field
+// was not set, or was not defined in the schema.
+func (m *Mutation) AddedField(name string) (ent.Value, bool) {
+	return nil, false
+}
+
+// AddField adds the value to the field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) AddField(name string, value ent.Value) error {
+	switch name {
+	}
+	return fmt.Errorf("unknown Conversion numeric field %s", name)
+}
+
+// ClearedFields returns all nullable fields that were cleared during this
+// mutation.
+func (m *Mutation) ClearedFields() []string {
+	var fields []string
+	if m.FieldCleared(FieldName) {
+		fields = append(fields, FieldName)
+	}
+	if m.FieldCleared(FieldInt8ToString) {
+		fields = append(fields, FieldInt8ToString)
+	}
+	if m.FieldCleared(FieldUint8ToString) {
+		fields = append(fields, FieldUint8ToString)
+	}
+	if m.FieldCleared(FieldInt16ToString) {
+		fields = append(fields, FieldInt16ToString)
+	}
+	if m.FieldCleared(FieldUint16ToString) {
+		fields = append(fields, FieldUint16ToString)
+	}
+	if m.FieldCleared(FieldInt32ToString) {
+		fields = append(fields, FieldInt32ToString)
+	}
+	if m.FieldCleared(FieldUint32ToString) {
+		fields = append(fields, FieldUint32ToString)
+	}
+	if m.FieldCleared(FieldInt64ToString) {
+		fields = append(fields, FieldInt64ToString)
+	}
+	if m.FieldCleared(FieldUint64ToString) {
+		fields = append(fields, FieldUint64ToString)
+	}
+	return fields
+}
+
+// FieldCleared returns a boolean indicating if a field with the given name was
+// cleared in this mutation.
+func (m *Mutation) FieldCleared(name string) bool {
+	_, ok := m.clearedFields[name]
+	return ok
+}
+
+// ClearField clears the value of the field with the given name. It returns an
+// error if the field is not defined in the schema.
+func (m *Mutation) ClearField(name string) error {
+	switch name {
+	case FieldName:
+		m.ClearName()
+		return nil
+	case FieldInt8ToString:
+		m.ClearInt8ToString()
+		return nil
+	case FieldUint8ToString:
+		m.ClearUint8ToString()
+		return nil
+	case FieldInt16ToString:
+		m.ClearInt16ToString()
+		return nil
+	case FieldUint16ToString:
+		m.ClearUint16ToString()
+		return nil
+	case FieldInt32ToString:
+		m.ClearInt32ToString()
+		return nil
+	case FieldUint32ToString:
+		m.ClearUint32ToString()
+		return nil
+	case FieldInt64ToString:
+		m.ClearInt64ToString()
+		return nil
+	case FieldUint64ToString:
+		m.ClearUint64ToString()
+		return nil
+	}
+	return fmt.Errorf("unknown Conversion nullable field %s", name)
+}
+
+// ResetField resets all changes in the mutation for the field with the given name.
+// It returns an error if the field is not defined in the schema.
+func (m *Mutation) ResetField(name string) error {
+	switch name {
+	case FieldName:
+		m.ResetName()
+		return nil
+	case FieldInt8ToString:
+		m.ResetInt8ToString()
+		return nil
+	case FieldUint8ToString:
+		m.ResetUint8ToString()
+		return nil
+	case FieldInt16ToString:
+		m.ResetInt16ToString()
+		return nil
+	case FieldUint16ToString:
+		m.ResetUint16ToString()
+		return nil
+	case FieldInt32ToString:
+		m.ResetInt32ToString()
+		return nil
+	case FieldUint32ToString:
+		m.ResetUint32ToString()
+		return nil
+	case FieldInt64ToString:
+		m.ResetInt64ToString()
+		return nil
+	case FieldUint64ToString:
+		m.ResetUint64ToString()
+		return nil
+	}
+	return fmt.Errorf("unknown Conversion field %s", name)
+}
+
+// AddedEdges returns all edge names that were set/added in this mutation.
+func (m *Mutation) AddedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// AddedIDs returns all IDs (to other nodes) that were added for the given edge
+// name in this mutation.
+func (m *Mutation) AddedIDs(name string) []ent.Value {
+	return nil
+}
+
+// RemovedEdges returns all edge names that were removed in this mutation.
+func (m *Mutation) RemovedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
+// the given name in this mutation.
+func (m *Mutation) RemovedIDs(name string) []ent.Value {
+	return nil
+}
+
+// ClearedEdges returns all edge names that were cleared in this mutation.
+func (m *Mutation) ClearedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// EdgeCleared returns a boolean which indicates if the edge with the given name
+// was cleared in this mutation.
+func (m *Mutation) EdgeCleared(name string) bool {
+	return false
+}
+
+// ClearEdge clears the value of the edge with the given name. It returns an error
+// if that edge is not defined in the schema.
+func (m *Mutation) ClearEdge(name string) error {
+	return fmt.Errorf("unknown Conversion unique edge %s", name)
+}
+
+// ResetEdge resets all changes to the edge with the given name in this mutation.
+// It returns an error if the edge is not defined in the schema.
+func (m *Mutation) ResetEdge(name string) error {
+	return fmt.Errorf("unknown Conversion edge %s", name)
+}

entc/integration/migrate/entv2/conversion/where.go

@@ -0,0 +1,792 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package conversion
+
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldID, id))
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldID, id))
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNEQ(FieldID, id))
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int) predicate.Conversion {
+	return predicate.Conversion(sql.FieldIn(FieldID, ids...))
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotIn(FieldID, ids...))
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGT(FieldID, id))
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGTE(FieldID, id))
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLT(FieldID, id))
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLTE(FieldID, id))
+}
+
+// Name applies equality check predicate on the "name" field. It's identical to NameEQ.
+func Name(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldName, v))
+}
+
+// Int8ToString applies equality check predicate on the "int8_to_string" field. It's identical to Int8ToStringEQ.
+func Int8ToString(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldInt8ToString, v))
+}
+
+// Uint8ToString applies equality check predicate on the "uint8_to_string" field. It's identical to Uint8ToStringEQ.
+func Uint8ToString(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldUint8ToString, v))
+}
+
+// Int16ToString applies equality check predicate on the "int16_to_string" field. It's identical to Int16ToStringEQ.
+func Int16ToString(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldInt16ToString, v))
+}
+
+// Uint16ToString applies equality check predicate on the "uint16_to_string" field. It's identical to Uint16ToStringEQ.
+func Uint16ToString(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldUint16ToString, v))
+}
+
+// Int32ToString applies equality check predicate on the "int32_to_string" field. It's identical to Int32ToStringEQ.
+func Int32ToString(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldInt32ToString, v))
+}
+
+// Uint32ToString applies equality check predicate on the "uint32_to_string" field. It's identical to Uint32ToStringEQ.
+func Uint32ToString(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldUint32ToString, v))
+}
+
+// Int64ToString applies equality check predicate on the "int64_to_string" field. It's identical to Int64ToStringEQ.
+func Int64ToString(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldInt64ToString, v))
+}
+
+// Uint64ToString applies equality check predicate on the "uint64_to_string" field. It's identical to Uint64ToStringEQ.
+func Uint64ToString(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldUint64ToString, v))
+}
+
+// NameEQ applies the EQ predicate on the "name" field.
+func NameEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldName, v))
+}
+
+// NameNEQ applies the NEQ predicate on the "name" field.
+func NameNEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNEQ(FieldName, v))
+}
+
+// NameIn applies the In predicate on the "name" field.
+func NameIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldIn(FieldName, vs...))
+}
+
+// NameNotIn applies the NotIn predicate on the "name" field.
+func NameNotIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotIn(FieldName, vs...))
+}
+
+// NameGT applies the GT predicate on the "name" field.
+func NameGT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGT(FieldName, v))
+}
+
+// NameGTE applies the GTE predicate on the "name" field.
+func NameGTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGTE(FieldName, v))
+}
+
+// NameLT applies the LT predicate on the "name" field.
+func NameLT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLT(FieldName, v))
+}
+
+// NameLTE applies the LTE predicate on the "name" field.
+func NameLTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLTE(FieldName, v))
+}
+
+// NameContains applies the Contains predicate on the "name" field.
+func NameContains(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContains(FieldName, v))
+}
+
+// NameHasPrefix applies the HasPrefix predicate on the "name" field.
+func NameHasPrefix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasPrefix(FieldName, v))
+}
+
+// NameHasSuffix applies the HasSuffix predicate on the "name" field.
+func NameHasSuffix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasSuffix(FieldName, v))
+}
+
+// NameIsNil applies the IsNil predicate on the "name" field.
+func NameIsNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldIsNull(FieldName))
+}
+
+// NameNotNil applies the NotNil predicate on the "name" field.
+func NameNotNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotNull(FieldName))
+}
+
+// NameEqualFold applies the EqualFold predicate on the "name" field.
+func NameEqualFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEqualFold(FieldName, v))
+}
+
+// NameContainsFold applies the ContainsFold predicate on the "name" field.
+func NameContainsFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContainsFold(FieldName, v))
+}
+
+// Int8ToStringEQ applies the EQ predicate on the "int8_to_string" field.
+func Int8ToStringEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldInt8ToString, v))
+}
+
+// Int8ToStringNEQ applies the NEQ predicate on the "int8_to_string" field.
+func Int8ToStringNEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNEQ(FieldInt8ToString, v))
+}
+
+// Int8ToStringIn applies the In predicate on the "int8_to_string" field.
+func Int8ToStringIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldIn(FieldInt8ToString, vs...))
+}
+
+// Int8ToStringNotIn applies the NotIn predicate on the "int8_to_string" field.
+func Int8ToStringNotIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotIn(FieldInt8ToString, vs...))
+}
+
+// Int8ToStringGT applies the GT predicate on the "int8_to_string" field.
+func Int8ToStringGT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGT(FieldInt8ToString, v))
+}
+
+// Int8ToStringGTE applies the GTE predicate on the "int8_to_string" field.
+func Int8ToStringGTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGTE(FieldInt8ToString, v))
+}
+
+// Int8ToStringLT applies the LT predicate on the "int8_to_string" field.
+func Int8ToStringLT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLT(FieldInt8ToString, v))
+}
+
+// Int8ToStringLTE applies the LTE predicate on the "int8_to_string" field.
+func Int8ToStringLTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLTE(FieldInt8ToString, v))
+}
+
+// Int8ToStringContains applies the Contains predicate on the "int8_to_string" field.
+func Int8ToStringContains(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContains(FieldInt8ToString, v))
+}
+
+// Int8ToStringHasPrefix applies the HasPrefix predicate on the "int8_to_string" field.
+func Int8ToStringHasPrefix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasPrefix(FieldInt8ToString, v))
+}
+
+// Int8ToStringHasSuffix applies the HasSuffix predicate on the "int8_to_string" field.
+func Int8ToStringHasSuffix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasSuffix(FieldInt8ToString, v))
+}
+
+// Int8ToStringIsNil applies the IsNil predicate on the "int8_to_string" field.
+func Int8ToStringIsNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldIsNull(FieldInt8ToString))
+}
+
+// Int8ToStringNotNil applies the NotNil predicate on the "int8_to_string" field.
+func Int8ToStringNotNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotNull(FieldInt8ToString))
+}
+
+// Int8ToStringEqualFold applies the EqualFold predicate on the "int8_to_string" field.
+func Int8ToStringEqualFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEqualFold(FieldInt8ToString, v))
+}
+
+// Int8ToStringContainsFold applies the ContainsFold predicate on the "int8_to_string" field.
+func Int8ToStringContainsFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContainsFold(FieldInt8ToString, v))
+}
+
+// Uint8ToStringEQ applies the EQ predicate on the "uint8_to_string" field.
+func Uint8ToStringEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldUint8ToString, v))
+}
+
+// Uint8ToStringNEQ applies the NEQ predicate on the "uint8_to_string" field.
+func Uint8ToStringNEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNEQ(FieldUint8ToString, v))
+}
+
+// Uint8ToStringIn applies the In predicate on the "uint8_to_string" field.
+func Uint8ToStringIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldIn(FieldUint8ToString, vs...))
+}
+
+// Uint8ToStringNotIn applies the NotIn predicate on the "uint8_to_string" field.
+func Uint8ToStringNotIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotIn(FieldUint8ToString, vs...))
+}
+
+// Uint8ToStringGT applies the GT predicate on the "uint8_to_string" field.
+func Uint8ToStringGT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGT(FieldUint8ToString, v))
+}
+
+// Uint8ToStringGTE applies the GTE predicate on the "uint8_to_string" field.
+func Uint8ToStringGTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGTE(FieldUint8ToString, v))
+}
+
+// Uint8ToStringLT applies the LT predicate on the "uint8_to_string" field.
+func Uint8ToStringLT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLT(FieldUint8ToString, v))
+}
+
+// Uint8ToStringLTE applies the LTE predicate on the "uint8_to_string" field.
+func Uint8ToStringLTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLTE(FieldUint8ToString, v))
+}
+
+// Uint8ToStringContains applies the Contains predicate on the "uint8_to_string" field.
+func Uint8ToStringContains(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContains(FieldUint8ToString, v))
+}
+
+// Uint8ToStringHasPrefix applies the HasPrefix predicate on the "uint8_to_string" field.
+func Uint8ToStringHasPrefix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasPrefix(FieldUint8ToString, v))
+}
+
+// Uint8ToStringHasSuffix applies the HasSuffix predicate on the "uint8_to_string" field.
+func Uint8ToStringHasSuffix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasSuffix(FieldUint8ToString, v))
+}
+
+// Uint8ToStringIsNil applies the IsNil predicate on the "uint8_to_string" field.
+func Uint8ToStringIsNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldIsNull(FieldUint8ToString))
+}
+
+// Uint8ToStringNotNil applies the NotNil predicate on the "uint8_to_string" field.
+func Uint8ToStringNotNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotNull(FieldUint8ToString))
+}
+
+// Uint8ToStringEqualFold applies the EqualFold predicate on the "uint8_to_string" field.
+func Uint8ToStringEqualFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEqualFold(FieldUint8ToString, v))
+}
+
+// Uint8ToStringContainsFold applies the ContainsFold predicate on the "uint8_to_string" field.
+func Uint8ToStringContainsFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContainsFold(FieldUint8ToString, v))
+}
+
+// Int16ToStringEQ applies the EQ predicate on the "int16_to_string" field.
+func Int16ToStringEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldInt16ToString, v))
+}
+
+// Int16ToStringNEQ applies the NEQ predicate on the "int16_to_string" field.
+func Int16ToStringNEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNEQ(FieldInt16ToString, v))
+}
+
+// Int16ToStringIn applies the In predicate on the "int16_to_string" field.
+func Int16ToStringIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldIn(FieldInt16ToString, vs...))
+}
+
+// Int16ToStringNotIn applies the NotIn predicate on the "int16_to_string" field.
+func Int16ToStringNotIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotIn(FieldInt16ToString, vs...))
+}
+
+// Int16ToStringGT applies the GT predicate on the "int16_to_string" field.
+func Int16ToStringGT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGT(FieldInt16ToString, v))
+}
+
+// Int16ToStringGTE applies the GTE predicate on the "int16_to_string" field.
+func Int16ToStringGTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGTE(FieldInt16ToString, v))
+}
+
+// Int16ToStringLT applies the LT predicate on the "int16_to_string" field.
+func Int16ToStringLT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLT(FieldInt16ToString, v))
+}
+
+// Int16ToStringLTE applies the LTE predicate on the "int16_to_string" field.
+func Int16ToStringLTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLTE(FieldInt16ToString, v))
+}
+
+// Int16ToStringContains applies the Contains predicate on the "int16_to_string" field.
+func Int16ToStringContains(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContains(FieldInt16ToString, v))
+}
+
+// Int16ToStringHasPrefix applies the HasPrefix predicate on the "int16_to_string" field.
+func Int16ToStringHasPrefix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasPrefix(FieldInt16ToString, v))
+}
+
+// Int16ToStringHasSuffix applies the HasSuffix predicate on the "int16_to_string" field.
+func Int16ToStringHasSuffix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasSuffix(FieldInt16ToString, v))
+}
+
+// Int16ToStringIsNil applies the IsNil predicate on the "int16_to_string" field.
+func Int16ToStringIsNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldIsNull(FieldInt16ToString))
+}
+
+// Int16ToStringNotNil applies the NotNil predicate on the "int16_to_string" field.
+func Int16ToStringNotNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotNull(FieldInt16ToString))
+}
+
+// Int16ToStringEqualFold applies the EqualFold predicate on the "int16_to_string" field.
+func Int16ToStringEqualFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEqualFold(FieldInt16ToString, v))
+}
+
+// Int16ToStringContainsFold applies the ContainsFold predicate on the "int16_to_string" field.
+func Int16ToStringContainsFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContainsFold(FieldInt16ToString, v))
+}
+
+// Uint16ToStringEQ applies the EQ predicate on the "uint16_to_string" field.
+func Uint16ToStringEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldUint16ToString, v))
+}
+
+// Uint16ToStringNEQ applies the NEQ predicate on the "uint16_to_string" field.
+func Uint16ToStringNEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNEQ(FieldUint16ToString, v))
+}
+
+// Uint16ToStringIn applies the In predicate on the "uint16_to_string" field.
+func Uint16ToStringIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldIn(FieldUint16ToString, vs...))
+}
+
+// Uint16ToStringNotIn applies the NotIn predicate on the "uint16_to_string" field.
+func Uint16ToStringNotIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotIn(FieldUint16ToString, vs...))
+}
+
+// Uint16ToStringGT applies the GT predicate on the "uint16_to_string" field.
+func Uint16ToStringGT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGT(FieldUint16ToString, v))
+}
+
+// Uint16ToStringGTE applies the GTE predicate on the "uint16_to_string" field.
+func Uint16ToStringGTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGTE(FieldUint16ToString, v))
+}
+
+// Uint16ToStringLT applies the LT predicate on the "uint16_to_string" field.
+func Uint16ToStringLT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLT(FieldUint16ToString, v))
+}
+
+// Uint16ToStringLTE applies the LTE predicate on the "uint16_to_string" field.
+func Uint16ToStringLTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLTE(FieldUint16ToString, v))
+}
+
+// Uint16ToStringContains applies the Contains predicate on the "uint16_to_string" field.
+func Uint16ToStringContains(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContains(FieldUint16ToString, v))
+}
+
+// Uint16ToStringHasPrefix applies the HasPrefix predicate on the "uint16_to_string" field.
+func Uint16ToStringHasPrefix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasPrefix(FieldUint16ToString, v))
+}
+
+// Uint16ToStringHasSuffix applies the HasSuffix predicate on the "uint16_to_string" field.
+func Uint16ToStringHasSuffix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasSuffix(FieldUint16ToString, v))
+}
+
+// Uint16ToStringIsNil applies the IsNil predicate on the "uint16_to_string" field.
+func Uint16ToStringIsNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldIsNull(FieldUint16ToString))
+}
+
+// Uint16ToStringNotNil applies the NotNil predicate on the "uint16_to_string" field.
+func Uint16ToStringNotNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotNull(FieldUint16ToString))
+}
+
+// Uint16ToStringEqualFold applies the EqualFold predicate on the "uint16_to_string" field.
+func Uint16ToStringEqualFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEqualFold(FieldUint16ToString, v))
+}
+
+// Uint16ToStringContainsFold applies the ContainsFold predicate on the "uint16_to_string" field.
+func Uint16ToStringContainsFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContainsFold(FieldUint16ToString, v))
+}
+
+// Int32ToStringEQ applies the EQ predicate on the "int32_to_string" field.
+func Int32ToStringEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldInt32ToString, v))
+}
+
+// Int32ToStringNEQ applies the NEQ predicate on the "int32_to_string" field.
+func Int32ToStringNEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNEQ(FieldInt32ToString, v))
+}
+
+// Int32ToStringIn applies the In predicate on the "int32_to_string" field.
+func Int32ToStringIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldIn(FieldInt32ToString, vs...))
+}
+
+// Int32ToStringNotIn applies the NotIn predicate on the "int32_to_string" field.
+func Int32ToStringNotIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotIn(FieldInt32ToString, vs...))
+}
+
+// Int32ToStringGT applies the GT predicate on the "int32_to_string" field.
+func Int32ToStringGT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGT(FieldInt32ToString, v))
+}
+
+// Int32ToStringGTE applies the GTE predicate on the "int32_to_string" field.
+func Int32ToStringGTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGTE(FieldInt32ToString, v))
+}
+
+// Int32ToStringLT applies the LT predicate on the "int32_to_string" field.
+func Int32ToStringLT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLT(FieldInt32ToString, v))
+}
+
+// Int32ToStringLTE applies the LTE predicate on the "int32_to_string" field.
+func Int32ToStringLTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLTE(FieldInt32ToString, v))
+}
+
+// Int32ToStringContains applies the Contains predicate on the "int32_to_string" field.
+func Int32ToStringContains(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContains(FieldInt32ToString, v))
+}
+
+// Int32ToStringHasPrefix applies the HasPrefix predicate on the "int32_to_string" field.
+func Int32ToStringHasPrefix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasPrefix(FieldInt32ToString, v))
+}
+
+// Int32ToStringHasSuffix applies the HasSuffix predicate on the "int32_to_string" field.
+func Int32ToStringHasSuffix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasSuffix(FieldInt32ToString, v))
+}
+
+// Int32ToStringIsNil applies the IsNil predicate on the "int32_to_string" field.
+func Int32ToStringIsNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldIsNull(FieldInt32ToString))
+}
+
+// Int32ToStringNotNil applies the NotNil predicate on the "int32_to_string" field.
+func Int32ToStringNotNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotNull(FieldInt32ToString))
+}
+
+// Int32ToStringEqualFold applies the EqualFold predicate on the "int32_to_string" field.
+func Int32ToStringEqualFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEqualFold(FieldInt32ToString, v))
+}
+
+// Int32ToStringContainsFold applies the ContainsFold predicate on the "int32_to_string" field.
+func Int32ToStringContainsFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContainsFold(FieldInt32ToString, v))
+}
+
+// Uint32ToStringEQ applies the EQ predicate on the "uint32_to_string" field.
+func Uint32ToStringEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldUint32ToString, v))
+}
+
+// Uint32ToStringNEQ applies the NEQ predicate on the "uint32_to_string" field.
+func Uint32ToStringNEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNEQ(FieldUint32ToString, v))
+}
+
+// Uint32ToStringIn applies the In predicate on the "uint32_to_string" field.
+func Uint32ToStringIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldIn(FieldUint32ToString, vs...))
+}
+
+// Uint32ToStringNotIn applies the NotIn predicate on the "uint32_to_string" field.
+func Uint32ToStringNotIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotIn(FieldUint32ToString, vs...))
+}
+
+// Uint32ToStringGT applies the GT predicate on the "uint32_to_string" field.
+func Uint32ToStringGT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGT(FieldUint32ToString, v))
+}
+
+// Uint32ToStringGTE applies the GTE predicate on the "uint32_to_string" field.
+func Uint32ToStringGTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGTE(FieldUint32ToString, v))
+}
+
+// Uint32ToStringLT applies the LT predicate on the "uint32_to_string" field.
+func Uint32ToStringLT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLT(FieldUint32ToString, v))
+}
+
+// Uint32ToStringLTE applies the LTE predicate on the "uint32_to_string" field.
+func Uint32ToStringLTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLTE(FieldUint32ToString, v))
+}
+
+// Uint32ToStringContains applies the Contains predicate on the "uint32_to_string" field.
+func Uint32ToStringContains(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContains(FieldUint32ToString, v))
+}
+
+// Uint32ToStringHasPrefix applies the HasPrefix predicate on the "uint32_to_string" field.
+func Uint32ToStringHasPrefix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasPrefix(FieldUint32ToString, v))
+}
+
+// Uint32ToStringHasSuffix applies the HasSuffix predicate on the "uint32_to_string" field.
+func Uint32ToStringHasSuffix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasSuffix(FieldUint32ToString, v))
+}
+
+// Uint32ToStringIsNil applies the IsNil predicate on the "uint32_to_string" field.
+func Uint32ToStringIsNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldIsNull(FieldUint32ToString))
+}
+
+// Uint32ToStringNotNil applies the NotNil predicate on the "uint32_to_string" field.
+func Uint32ToStringNotNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotNull(FieldUint32ToString))
+}
+
+// Uint32ToStringEqualFold applies the EqualFold predicate on the "uint32_to_string" field.
+func Uint32ToStringEqualFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEqualFold(FieldUint32ToString, v))
+}
+
+// Uint32ToStringContainsFold applies the ContainsFold predicate on the "uint32_to_string" field.
+func Uint32ToStringContainsFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContainsFold(FieldUint32ToString, v))
+}
+
+// Int64ToStringEQ applies the EQ predicate on the "int64_to_string" field.
+func Int64ToStringEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldInt64ToString, v))
+}
+
+// Int64ToStringNEQ applies the NEQ predicate on the "int64_to_string" field.
+func Int64ToStringNEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNEQ(FieldInt64ToString, v))
+}
+
+// Int64ToStringIn applies the In predicate on the "int64_to_string" field.
+func Int64ToStringIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldIn(FieldInt64ToString, vs...))
+}
+
+// Int64ToStringNotIn applies the NotIn predicate on the "int64_to_string" field.
+func Int64ToStringNotIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotIn(FieldInt64ToString, vs...))
+}
+
+// Int64ToStringGT applies the GT predicate on the "int64_to_string" field.
+func Int64ToStringGT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGT(FieldInt64ToString, v))
+}
+
+// Int64ToStringGTE applies the GTE predicate on the "int64_to_string" field.
+func Int64ToStringGTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGTE(FieldInt64ToString, v))
+}
+
+// Int64ToStringLT applies the LT predicate on the "int64_to_string" field.
+func Int64ToStringLT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLT(FieldInt64ToString, v))
+}
+
+// Int64ToStringLTE applies the LTE predicate on the "int64_to_string" field.
+func Int64ToStringLTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLTE(FieldInt64ToString, v))
+}
+
+// Int64ToStringContains applies the Contains predicate on the "int64_to_string" field.
+func Int64ToStringContains(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContains(FieldInt64ToString, v))
+}
+
+// Int64ToStringHasPrefix applies the HasPrefix predicate on the "int64_to_string" field.
+func Int64ToStringHasPrefix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasPrefix(FieldInt64ToString, v))
+}
+
+// Int64ToStringHasSuffix applies the HasSuffix predicate on the "int64_to_string" field.
+func Int64ToStringHasSuffix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasSuffix(FieldInt64ToString, v))
+}
+
+// Int64ToStringIsNil applies the IsNil predicate on the "int64_to_string" field.
+func Int64ToStringIsNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldIsNull(FieldInt64ToString))
+}
+
+// Int64ToStringNotNil applies the NotNil predicate on the "int64_to_string" field.
+func Int64ToStringNotNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotNull(FieldInt64ToString))
+}
+
+// Int64ToStringEqualFold applies the EqualFold predicate on the "int64_to_string" field.
+func Int64ToStringEqualFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEqualFold(FieldInt64ToString, v))
+}
+
+// Int64ToStringContainsFold applies the ContainsFold predicate on the "int64_to_string" field.
+func Int64ToStringContainsFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContainsFold(FieldInt64ToString, v))
+}
+
+// Uint64ToStringEQ applies the EQ predicate on the "uint64_to_string" field.
+func Uint64ToStringEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEQ(FieldUint64ToString, v))
+}
+
+// Uint64ToStringNEQ applies the NEQ predicate on the "uint64_to_string" field.
+func Uint64ToStringNEQ(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNEQ(FieldUint64ToString, v))
+}
+
+// Uint64ToStringIn applies the In predicate on the "uint64_to_string" field.
+func Uint64ToStringIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldIn(FieldUint64ToString, vs...))
+}
+
+// Uint64ToStringNotIn applies the NotIn predicate on the "uint64_to_string" field.
+func Uint64ToStringNotIn(vs ...string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotIn(FieldUint64ToString, vs...))
+}
+
+// Uint64ToStringGT applies the GT predicate on the "uint64_to_string" field.
+func Uint64ToStringGT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGT(FieldUint64ToString, v))
+}
+
+// Uint64ToStringGTE applies the GTE predicate on the "uint64_to_string" field.
+func Uint64ToStringGTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldGTE(FieldUint64ToString, v))
+}
+
+// Uint64ToStringLT applies the LT predicate on the "uint64_to_string" field.
+func Uint64ToStringLT(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLT(FieldUint64ToString, v))
+}
+
+// Uint64ToStringLTE applies the LTE predicate on the "uint64_to_string" field.
+func Uint64ToStringLTE(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldLTE(FieldUint64ToString, v))
+}
+
+// Uint64ToStringContains applies the Contains predicate on the "uint64_to_string" field.
+func Uint64ToStringContains(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContains(FieldUint64ToString, v))
+}
+
+// Uint64ToStringHasPrefix applies the HasPrefix predicate on the "uint64_to_string" field.
+func Uint64ToStringHasPrefix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasPrefix(FieldUint64ToString, v))
+}
+
+// Uint64ToStringHasSuffix applies the HasSuffix predicate on the "uint64_to_string" field.
+func Uint64ToStringHasSuffix(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldHasSuffix(FieldUint64ToString, v))
+}
+
+// Uint64ToStringIsNil applies the IsNil predicate on the "uint64_to_string" field.
+func Uint64ToStringIsNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldIsNull(FieldUint64ToString))
+}
+
+// Uint64ToStringNotNil applies the NotNil predicate on the "uint64_to_string" field.
+func Uint64ToStringNotNil() predicate.Conversion {
+	return predicate.Conversion(sql.FieldNotNull(FieldUint64ToString))
+}
+
+// Uint64ToStringEqualFold applies the EqualFold predicate on the "uint64_to_string" field.
+func Uint64ToStringEqualFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldEqualFold(FieldUint64ToString, v))
+}
+
+// Uint64ToStringContainsFold applies the ContainsFold predicate on the "uint64_to_string" field.
+func Uint64ToStringContainsFold(v string) predicate.Conversion {
+	return predicate.Conversion(sql.FieldContainsFold(FieldUint64ToString, v))
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.Conversion) predicate.Conversion {
+	return predicate.Conversion(sql.AndPredicates(predicates...))
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.Conversion) predicate.Conversion {
+	return predicate.Conversion(sql.OrPredicates(predicates...))
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.Conversion) predicate.Conversion {
+	return predicate.Conversion(sql.NotPredicates(p))
+}

entc/integration/migrate/entv2/conversion_create.go

@@ -0,0 +1,335 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/conversion"
+	"entgo.io/ent/schema/field"
+)
+
+// ConversionCreate is the builder for creating a Conversion entity.
+type ConversionCreate struct {
+	config
+	mutation *ConversionMutation
+	hooks    []Hook
+}
+
+// SetName sets the "name" field.
+func (_c *ConversionCreate) SetName(v string) *ConversionCreate {
+	_c.mutation.SetName(v)
+	return _c
+}
+
+// SetNillableName sets the "name" field if the given value is not nil.
+func (_c *ConversionCreate) SetNillableName(v *string) *ConversionCreate {
+	if v != nil {
+		_c.SetName(*v)
+	}
+	return _c
+}
+
+// SetInt8ToString sets the "int8_to_string" field.
+func (_c *ConversionCreate) SetInt8ToString(v string) *ConversionCreate {
+	_c.mutation.SetInt8ToString(v)
+	return _c
+}
+
+// SetNillableInt8ToString sets the "int8_to_string" field if the given value is not nil.
+func (_c *ConversionCreate) SetNillableInt8ToString(v *string) *ConversionCreate {
+	if v != nil {
+		_c.SetInt8ToString(*v)
+	}
+	return _c
+}
+
+// SetUint8ToString sets the "uint8_to_string" field.
+func (_c *ConversionCreate) SetUint8ToString(v string) *ConversionCreate {
+	_c.mutation.SetUint8ToString(v)
+	return _c
+}
+
+// SetNillableUint8ToString sets the "uint8_to_string" field if the given value is not nil.
+func (_c *ConversionCreate) SetNillableUint8ToString(v *string) *ConversionCreate {
+	if v != nil {
+		_c.SetUint8ToString(*v)
+	}
+	return _c
+}
+
+// SetInt16ToString sets the "int16_to_string" field.
+func (_c *ConversionCreate) SetInt16ToString(v string) *ConversionCreate {
+	_c.mutation.SetInt16ToString(v)
+	return _c
+}
+
+// SetNillableInt16ToString sets the "int16_to_string" field if the given value is not nil.
+func (_c *ConversionCreate) SetNillableInt16ToString(v *string) *ConversionCreate {
+	if v != nil {
+		_c.SetInt16ToString(*v)
+	}
+	return _c
+}
+
+// SetUint16ToString sets the "uint16_to_string" field.
+func (_c *ConversionCreate) SetUint16ToString(v string) *ConversionCreate {
+	_c.mutation.SetUint16ToString(v)
+	return _c
+}
+
+// SetNillableUint16ToString sets the "uint16_to_string" field if the given value is not nil.
+func (_c *ConversionCreate) SetNillableUint16ToString(v *string) *ConversionCreate {
+	if v != nil {
+		_c.SetUint16ToString(*v)
+	}
+	return _c
+}
+
+// SetInt32ToString sets the "int32_to_string" field.
+func (_c *ConversionCreate) SetInt32ToString(v string) *ConversionCreate {
+	_c.mutation.SetInt32ToString(v)
+	return _c
+}
+
+// SetNillableInt32ToString sets the "int32_to_string" field if the given value is not nil.
+func (_c *ConversionCreate) SetNillableInt32ToString(v *string) *ConversionCreate {
+	if v != nil {
+		_c.SetInt32ToString(*v)
+	}
+	return _c
+}
+
+// SetUint32ToString sets the "uint32_to_string" field.
+func (_c *ConversionCreate) SetUint32ToString(v string) *ConversionCreate {
+	_c.mutation.SetUint32ToString(v)
+	return _c
+}
+
+// SetNillableUint32ToString sets the "uint32_to_string" field if the given value is not nil.
+func (_c *ConversionCreate) SetNillableUint32ToString(v *string) *ConversionCreate {
+	if v != nil {
+		_c.SetUint32ToString(*v)
+	}
+	return _c
+}
+
+// SetInt64ToString sets the "int64_to_string" field.
+func (_c *ConversionCreate) SetInt64ToString(v string) *ConversionCreate {
+	_c.mutation.SetInt64ToString(v)
+	return _c
+}
+
+// SetNillableInt64ToString sets the "int64_to_string" field if the given value is not nil.
+func (_c *ConversionCreate) SetNillableInt64ToString(v *string) *ConversionCreate {
+	if v != nil {
+		_c.SetInt64ToString(*v)
+	}
+	return _c
+}
+
+// SetUint64ToString sets the "uint64_to_string" field.
+func (_c *ConversionCreate) SetUint64ToString(v string) *ConversionCreate {
+	_c.mutation.SetUint64ToString(v)
+	return _c
+}
+
+// SetNillableUint64ToString sets the "uint64_to_string" field if the given value is not nil.
+func (_c *ConversionCreate) SetNillableUint64ToString(v *string) *ConversionCreate {
+	if v != nil {
+		_c.SetUint64ToString(*v)
+	}
+	return _c
+}
+
+// Mutation returns the ConversionMutation object of the builder.
+func (_c *ConversionCreate) Mutation() *ConversionMutation {
+	return _c.mutation
+}
+
+// Save creates the Conversion in the database.
+func (_c *ConversionCreate) Save(ctx context.Context) (*Conversion, error) {
+	return withHooks(ctx, _c.sqlSave, _c.mutation, _c.hooks)
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (_c *ConversionCreate) SaveX(ctx context.Context) *Conversion {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *ConversionCreate) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *ConversionCreate) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_c *ConversionCreate) check() error {
+	return nil
+}
+
+func (_c *ConversionCreate) sqlSave(ctx context.Context) (*Conversion, error) {
+	if err := _c.check(); err != nil {
+		return nil, err
+	}
+	_node, _spec := _c.createSpec()
+	if err := sqlgraph.CreateNode(ctx, _c.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	id := _spec.ID.Value.(int64)
+	_node.ID = int(id)
+	_c.mutation.id = &_node.ID
+	_c.mutation.done = true
+	return _node, nil
+}
+
+func (_c *ConversionCreate) createSpec() (*Conversion, *sqlgraph.CreateSpec) {
+	var (
+		_node = &Conversion{config: _c.config}
+		_spec = sqlgraph.NewCreateSpec(conversion.Table, sqlgraph.NewFieldSpec(conversion.FieldID, field.TypeInt))
+	)
+	if value, ok := _c.mutation.Name(); ok {
+		_spec.SetField(conversion.FieldName, field.TypeString, value)
+		_node.Name = value
+	}
+	if value, ok := _c.mutation.Int8ToString(); ok {
+		_spec.SetField(conversion.FieldInt8ToString, field.TypeString, value)
+		_node.Int8ToString = value
+	}
+	if value, ok := _c.mutation.Uint8ToString(); ok {
+		_spec.SetField(conversion.FieldUint8ToString, field.TypeString, value)
+		_node.Uint8ToString = value
+	}
+	if value, ok := _c.mutation.Int16ToString(); ok {
+		_spec.SetField(conversion.FieldInt16ToString, field.TypeString, value)
+		_node.Int16ToString = value
+	}
+	if value, ok := _c.mutation.Uint16ToString(); ok {
+		_spec.SetField(conversion.FieldUint16ToString, field.TypeString, value)
+		_node.Uint16ToString = value
+	}
+	if value, ok := _c.mutation.Int32ToString(); ok {
+		_spec.SetField(conversion.FieldInt32ToString, field.TypeString, value)
+		_node.Int32ToString = value
+	}
+	if value, ok := _c.mutation.Uint32ToString(); ok {
+		_spec.SetField(conversion.FieldUint32ToString, field.TypeString, value)
+		_node.Uint32ToString = value
+	}
+	if value, ok := _c.mutation.Int64ToString(); ok {
+		_spec.SetField(conversion.FieldInt64ToString, field.TypeString, value)
+		_node.Int64ToString = value
+	}
+	if value, ok := _c.mutation.Uint64ToString(); ok {
+		_spec.SetField(conversion.FieldUint64ToString, field.TypeString, value)
+		_node.Uint64ToString = value
+	}
+	return _node, _spec
+}
+
+// ConversionCreateBulk is the builder for creating many Conversion entities in bulk.
+type ConversionCreateBulk struct {
+	config
+	err      error
+	builders []*ConversionCreate
+}
+
+// Save creates the Conversion entities in the database.
+func (_c *ConversionCreateBulk) Save(ctx context.Context) ([]*Conversion, error) {
+	if _c.err != nil {
+		return nil, _c.err
+	}
+	specs := make([]*sqlgraph.CreateSpec, len(_c.builders))
+	nodes := make([]*Conversion, len(_c.builders))
+	mutators := make([]Mutator, len(_c.builders))
+	for i := range _c.builders {
+		func(i int, root context.Context) {
+			builder := _c.builders[i]
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*ConversionMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				var err error
+				nodes[i], specs[i] = builder.createSpec()
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, _c.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, _c.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{msg: err.Error(), wrap: err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				if specs[i].ID.Value != nil {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int(id)
+				}
+				mutation.done = true
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, _c.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_c *ConversionCreateBulk) SaveX(ctx context.Context) []*Conversion {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *ConversionCreateBulk) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *ConversionCreateBulk) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/conversion_delete.go

@@ -0,0 +1,92 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/conversion"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// ConversionDelete is the builder for deleting a Conversion entity.
+type ConversionDelete struct {
+	config
+	hooks    []Hook
+	mutation *ConversionMutation
+}
+
+// Where appends a list predicates to the ConversionDelete builder.
+func (_d *ConversionDelete) Where(ps ...predicate.Conversion) *ConversionDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *ConversionDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *ConversionDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *ConversionDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(conversion.Table, sqlgraph.NewFieldSpec(conversion.FieldID, field.TypeInt))
+	if ps := _d.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// ConversionDeleteOne is the builder for deleting a single Conversion entity.
+type ConversionDeleteOne struct {
+	_d *ConversionDelete
+}
+
+// Where appends a list predicates to the ConversionDelete builder.
+func (_d *ConversionDeleteOne) Where(ps ...predicate.Conversion) *ConversionDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *ConversionDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{conversion.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *ConversionDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/conversion_query.go

@@ -0,0 +1,531 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/conversion"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// ConversionQuery is the builder for querying Conversion entities.
+type ConversionQuery struct {
+	config
+	ctx        *QueryContext
+	order      []conversion.OrderOption
+	inters     []Interceptor
+	predicates []predicate.Conversion
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the ConversionQuery builder.
+func (_q *ConversionQuery) Where(ps ...predicate.Conversion) *ConversionQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *ConversionQuery) Limit(limit int) *ConversionQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *ConversionQuery) Offset(offset int) *ConversionQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *ConversionQuery) Unique(unique bool) *ConversionQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *ConversionQuery) Order(o ...conversion.OrderOption) *ConversionQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// First returns the first Conversion entity from the query.
+// Returns a *NotFoundError when no Conversion was found.
+func (_q *ConversionQuery) First(ctx context.Context) (*Conversion, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{conversion.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *ConversionQuery) FirstX(ctx context.Context) *Conversion {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first Conversion ID from the query.
+// Returns a *NotFoundError when no Conversion ID was found.
+func (_q *ConversionQuery) FirstID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{conversion.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *ConversionQuery) FirstIDX(ctx context.Context) int {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single Conversion entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one Conversion entity is found.
+// Returns a *NotFoundError when no Conversion entities are found.
+func (_q *ConversionQuery) Only(ctx context.Context) (*Conversion, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{conversion.Label}
+	default:
+		return nil, &NotSingularError{conversion.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *ConversionQuery) OnlyX(ctx context.Context) *Conversion {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only Conversion ID in the query.
+// Returns a *NotSingularError when more than one Conversion ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *ConversionQuery) OnlyID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{conversion.Label}
+	default:
+		err = &NotSingularError{conversion.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *ConversionQuery) OnlyIDX(ctx context.Context) int {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of Conversions.
+func (_q *ConversionQuery) All(ctx context.Context) ([]*Conversion, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*Conversion, *ConversionQuery]()
+	return withInterceptors[[]*Conversion](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *ConversionQuery) AllX(ctx context.Context) []*Conversion {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of Conversion IDs.
+func (_q *ConversionQuery) IDs(ctx context.Context) (ids []int, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(conversion.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *ConversionQuery) IDsX(ctx context.Context) []int {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *ConversionQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*ConversionQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *ConversionQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *ConversionQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("entv2: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *ConversionQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the ConversionQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *ConversionQuery) Clone() *ConversionQuery {
+	if _q == nil {
+		return nil
+	}
+	return &ConversionQuery{
+		config:     _q.config,
+		ctx:        _q.ctx.Clone(),
+		order:      append([]conversion.OrderOption{}, _q.order...),
+		inters:     append([]Interceptor{}, _q.inters...),
+		predicates: append([]predicate.Conversion{}, _q.predicates...),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		Name string `json:"name,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.Conversion.Query().
+//		GroupBy(conversion.FieldName).
+//		Aggregate(entv2.Count()).
+//		Scan(ctx, &v)
+func (_q *ConversionQuery) GroupBy(field string, fields ...string) *ConversionGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &ConversionGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = conversion.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		Name string `json:"name,omitempty"`
+//	}
+//
+//	client.Conversion.Query().
+//		Select(conversion.FieldName).
+//		Scan(ctx, &v)
+func (_q *ConversionQuery) Select(fields ...string) *ConversionSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &ConversionSelect{ConversionQuery: _q}
+	sbuild.label = conversion.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a ConversionSelect configured with the given aggregations.
+func (_q *ConversionQuery) Aggregate(fns ...AggregateFunc) *ConversionSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *ConversionQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("entv2: uninitialized interceptor (forgotten import entv2/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !conversion.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *ConversionQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Conversion, error) {
+	var (
+		nodes = []*Conversion{}
+		_spec = _q.querySpec()
+	)
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*Conversion).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &Conversion{config: _q.config}
+		nodes = append(nodes, node)
+		return node.assignValues(columns, values)
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	return nodes, nil
+}
+
+func (_q *ConversionQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *ConversionQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(conversion.Table, conversion.Columns, sqlgraph.NewFieldSpec(conversion.FieldID, field.TypeInt))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, conversion.FieldID)
+		for i := range fields {
+			if fields[i] != conversion.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *ConversionQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(conversion.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = conversion.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// ConversionGroupBy is the group-by builder for Conversion entities.
+type ConversionGroupBy struct {
+	selector
+	build *ConversionQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *ConversionGroupBy) Aggregate(fns ...AggregateFunc) *ConversionGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *ConversionGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*ConversionQuery, *ConversionGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *ConversionGroupBy) sqlScan(ctx context.Context, root *ConversionQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// ConversionSelect is the builder for selecting fields of Conversion entities.
+type ConversionSelect struct {
+	*ConversionQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *ConversionSelect) Aggregate(fns ...AggregateFunc) *ConversionSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *ConversionSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*ConversionQuery, *ConversionSelect](ctx, _s.ConversionQuery, _s, _s.inters, v)
+}
+
+func (_s *ConversionSelect) sqlScan(ctx context.Context, root *ConversionQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

entc/integration/migrate/entv2/conversion_update.go

@@ -0,0 +1,647 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/conversion"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// ConversionUpdate is the builder for updating Conversion entities.
+type ConversionUpdate struct {
+	config
+	hooks    []Hook
+	mutation *ConversionMutation
+}
+
+// Where appends a list predicates to the ConversionUpdate builder.
+func (_u *ConversionUpdate) Where(ps ...predicate.Conversion) *ConversionUpdate {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// SetName sets the "name" field.
+func (_u *ConversionUpdate) SetName(v string) *ConversionUpdate {
+	_u.mutation.SetName(v)
+	return _u
+}
+
+// SetNillableName sets the "name" field if the given value is not nil.
+func (_u *ConversionUpdate) SetNillableName(v *string) *ConversionUpdate {
+	if v != nil {
+		_u.SetName(*v)
+	}
+	return _u
+}
+
+// ClearName clears the value of the "name" field.
+func (_u *ConversionUpdate) ClearName() *ConversionUpdate {
+	_u.mutation.ClearName()
+	return _u
+}
+
+// SetInt8ToString sets the "int8_to_string" field.
+func (_u *ConversionUpdate) SetInt8ToString(v string) *ConversionUpdate {
+	_u.mutation.SetInt8ToString(v)
+	return _u
+}
+
+// SetNillableInt8ToString sets the "int8_to_string" field if the given value is not nil.
+func (_u *ConversionUpdate) SetNillableInt8ToString(v *string) *ConversionUpdate {
+	if v != nil {
+		_u.SetInt8ToString(*v)
+	}
+	return _u
+}
+
+// ClearInt8ToString clears the value of the "int8_to_string" field.
+func (_u *ConversionUpdate) ClearInt8ToString() *ConversionUpdate {
+	_u.mutation.ClearInt8ToString()
+	return _u
+}
+
+// SetUint8ToString sets the "uint8_to_string" field.
+func (_u *ConversionUpdate) SetUint8ToString(v string) *ConversionUpdate {
+	_u.mutation.SetUint8ToString(v)
+	return _u
+}
+
+// SetNillableUint8ToString sets the "uint8_to_string" field if the given value is not nil.
+func (_u *ConversionUpdate) SetNillableUint8ToString(v *string) *ConversionUpdate {
+	if v != nil {
+		_u.SetUint8ToString(*v)
+	}
+	return _u
+}
+
+// ClearUint8ToString clears the value of the "uint8_to_string" field.
+func (_u *ConversionUpdate) ClearUint8ToString() *ConversionUpdate {
+	_u.mutation.ClearUint8ToString()
+	return _u
+}
+
+// SetInt16ToString sets the "int16_to_string" field.
+func (_u *ConversionUpdate) SetInt16ToString(v string) *ConversionUpdate {
+	_u.mutation.SetInt16ToString(v)
+	return _u
+}
+
+// SetNillableInt16ToString sets the "int16_to_string" field if the given value is not nil.
+func (_u *ConversionUpdate) SetNillableInt16ToString(v *string) *ConversionUpdate {
+	if v != nil {
+		_u.SetInt16ToString(*v)
+	}
+	return _u
+}
+
+// ClearInt16ToString clears the value of the "int16_to_string" field.
+func (_u *ConversionUpdate) ClearInt16ToString() *ConversionUpdate {
+	_u.mutation.ClearInt16ToString()
+	return _u
+}
+
+// SetUint16ToString sets the "uint16_to_string" field.
+func (_u *ConversionUpdate) SetUint16ToString(v string) *ConversionUpdate {
+	_u.mutation.SetUint16ToString(v)
+	return _u
+}
+
+// SetNillableUint16ToString sets the "uint16_to_string" field if the given value is not nil.
+func (_u *ConversionUpdate) SetNillableUint16ToString(v *string) *ConversionUpdate {
+	if v != nil {
+		_u.SetUint16ToString(*v)
+	}
+	return _u
+}
+
+// ClearUint16ToString clears the value of the "uint16_to_string" field.
+func (_u *ConversionUpdate) ClearUint16ToString() *ConversionUpdate {
+	_u.mutation.ClearUint16ToString()
+	return _u
+}
+
+// SetInt32ToString sets the "int32_to_string" field.
+func (_u *ConversionUpdate) SetInt32ToString(v string) *ConversionUpdate {
+	_u.mutation.SetInt32ToString(v)
+	return _u
+}
+
+// SetNillableInt32ToString sets the "int32_to_string" field if the given value is not nil.
+func (_u *ConversionUpdate) SetNillableInt32ToString(v *string) *ConversionUpdate {
+	if v != nil {
+		_u.SetInt32ToString(*v)
+	}
+	return _u
+}
+
+// ClearInt32ToString clears the value of the "int32_to_string" field.
+func (_u *ConversionUpdate) ClearInt32ToString() *ConversionUpdate {
+	_u.mutation.ClearInt32ToString()
+	return _u
+}
+
+// SetUint32ToString sets the "uint32_to_string" field.
+func (_u *ConversionUpdate) SetUint32ToString(v string) *ConversionUpdate {
+	_u.mutation.SetUint32ToString(v)
+	return _u
+}
+
+// SetNillableUint32ToString sets the "uint32_to_string" field if the given value is not nil.
+func (_u *ConversionUpdate) SetNillableUint32ToString(v *string) *ConversionUpdate {
+	if v != nil {
+		_u.SetUint32ToString(*v)
+	}
+	return _u
+}
+
+// ClearUint32ToString clears the value of the "uint32_to_string" field.
+func (_u *ConversionUpdate) ClearUint32ToString() *ConversionUpdate {
+	_u.mutation.ClearUint32ToString()
+	return _u
+}
+
+// SetInt64ToString sets the "int64_to_string" field.
+func (_u *ConversionUpdate) SetInt64ToString(v string) *ConversionUpdate {
+	_u.mutation.SetInt64ToString(v)
+	return _u
+}
+
+// SetNillableInt64ToString sets the "int64_to_string" field if the given value is not nil.
+func (_u *ConversionUpdate) SetNillableInt64ToString(v *string) *ConversionUpdate {
+	if v != nil {
+		_u.SetInt64ToString(*v)
+	}
+	return _u
+}
+
+// ClearInt64ToString clears the value of the "int64_to_string" field.
+func (_u *ConversionUpdate) ClearInt64ToString() *ConversionUpdate {
+	_u.mutation.ClearInt64ToString()
+	return _u
+}
+
+// SetUint64ToString sets the "uint64_to_string" field.
+func (_u *ConversionUpdate) SetUint64ToString(v string) *ConversionUpdate {
+	_u.mutation.SetUint64ToString(v)
+	return _u
+}
+
+// SetNillableUint64ToString sets the "uint64_to_string" field if the given value is not nil.
+func (_u *ConversionUpdate) SetNillableUint64ToString(v *string) *ConversionUpdate {
+	if v != nil {
+		_u.SetUint64ToString(*v)
+	}
+	return _u
+}
+
+// ClearUint64ToString clears the value of the "uint64_to_string" field.
+func (_u *ConversionUpdate) ClearUint64ToString() *ConversionUpdate {
+	_u.mutation.ClearUint64ToString()
+	return _u
+}
+
+// Mutation returns the ConversionMutation object of the builder.
+func (_u *ConversionUpdate) Mutation() *ConversionMutation {
+	return _u.mutation
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (_u *ConversionUpdate) Save(ctx context.Context) (int, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *ConversionUpdate) SaveX(ctx context.Context) int {
+	affected, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (_u *ConversionUpdate) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *ConversionUpdate) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *ConversionUpdate) sqlSave(ctx context.Context) (_node int, err error) {
+	_spec := sqlgraph.NewUpdateSpec(conversion.Table, conversion.Columns, sqlgraph.NewFieldSpec(conversion.FieldID, field.TypeInt))
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Name(); ok {
+		_spec.SetField(conversion.FieldName, field.TypeString, value)
+	}
+	if _u.mutation.NameCleared() {
+		_spec.ClearField(conversion.FieldName, field.TypeString)
+	}
+	if value, ok := _u.mutation.Int8ToString(); ok {
+		_spec.SetField(conversion.FieldInt8ToString, field.TypeString, value)
+	}
+	if _u.mutation.Int8ToStringCleared() {
+		_spec.ClearField(conversion.FieldInt8ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Uint8ToString(); ok {
+		_spec.SetField(conversion.FieldUint8ToString, field.TypeString, value)
+	}
+	if _u.mutation.Uint8ToStringCleared() {
+		_spec.ClearField(conversion.FieldUint8ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Int16ToString(); ok {
+		_spec.SetField(conversion.FieldInt16ToString, field.TypeString, value)
+	}
+	if _u.mutation.Int16ToStringCleared() {
+		_spec.ClearField(conversion.FieldInt16ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Uint16ToString(); ok {
+		_spec.SetField(conversion.FieldUint16ToString, field.TypeString, value)
+	}
+	if _u.mutation.Uint16ToStringCleared() {
+		_spec.ClearField(conversion.FieldUint16ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Int32ToString(); ok {
+		_spec.SetField(conversion.FieldInt32ToString, field.TypeString, value)
+	}
+	if _u.mutation.Int32ToStringCleared() {
+		_spec.ClearField(conversion.FieldInt32ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Uint32ToString(); ok {
+		_spec.SetField(conversion.FieldUint32ToString, field.TypeString, value)
+	}
+	if _u.mutation.Uint32ToStringCleared() {
+		_spec.ClearField(conversion.FieldUint32ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Int64ToString(); ok {
+		_spec.SetField(conversion.FieldInt64ToString, field.TypeString, value)
+	}
+	if _u.mutation.Int64ToStringCleared() {
+		_spec.ClearField(conversion.FieldInt64ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Uint64ToString(); ok {
+		_spec.SetField(conversion.FieldUint64ToString, field.TypeString, value)
+	}
+	if _u.mutation.Uint64ToStringCleared() {
+		_spec.ClearField(conversion.FieldUint64ToString, field.TypeString)
+	}
+	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{conversion.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return 0, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}
+
+// ConversionUpdateOne is the builder for updating a single Conversion entity.
+type ConversionUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *ConversionMutation
+}
+
+// SetName sets the "name" field.
+func (_u *ConversionUpdateOne) SetName(v string) *ConversionUpdateOne {
+	_u.mutation.SetName(v)
+	return _u
+}
+
+// SetNillableName sets the "name" field if the given value is not nil.
+func (_u *ConversionUpdateOne) SetNillableName(v *string) *ConversionUpdateOne {
+	if v != nil {
+		_u.SetName(*v)
+	}
+	return _u
+}
+
+// ClearName clears the value of the "name" field.
+func (_u *ConversionUpdateOne) ClearName() *ConversionUpdateOne {
+	_u.mutation.ClearName()
+	return _u
+}
+
+// SetInt8ToString sets the "int8_to_string" field.
+func (_u *ConversionUpdateOne) SetInt8ToString(v string) *ConversionUpdateOne {
+	_u.mutation.SetInt8ToString(v)
+	return _u
+}
+
+// SetNillableInt8ToString sets the "int8_to_string" field if the given value is not nil.
+func (_u *ConversionUpdateOne) SetNillableInt8ToString(v *string) *ConversionUpdateOne {
+	if v != nil {
+		_u.SetInt8ToString(*v)
+	}
+	return _u
+}
+
+// ClearInt8ToString clears the value of the "int8_to_string" field.
+func (_u *ConversionUpdateOne) ClearInt8ToString() *ConversionUpdateOne {
+	_u.mutation.ClearInt8ToString()
+	return _u
+}
+
+// SetUint8ToString sets the "uint8_to_string" field.
+func (_u *ConversionUpdateOne) SetUint8ToString(v string) *ConversionUpdateOne {
+	_u.mutation.SetUint8ToString(v)
+	return _u
+}
+
+// SetNillableUint8ToString sets the "uint8_to_string" field if the given value is not nil.
+func (_u *ConversionUpdateOne) SetNillableUint8ToString(v *string) *ConversionUpdateOne {
+	if v != nil {
+		_u.SetUint8ToString(*v)
+	}
+	return _u
+}
+
+// ClearUint8ToString clears the value of the "uint8_to_string" field.
+func (_u *ConversionUpdateOne) ClearUint8ToString() *ConversionUpdateOne {
+	_u.mutation.ClearUint8ToString()
+	return _u
+}
+
+// SetInt16ToString sets the "int16_to_string" field.
+func (_u *ConversionUpdateOne) SetInt16ToString(v string) *ConversionUpdateOne {
+	_u.mutation.SetInt16ToString(v)
+	return _u
+}
+
+// SetNillableInt16ToString sets the "int16_to_string" field if the given value is not nil.
+func (_u *ConversionUpdateOne) SetNillableInt16ToString(v *string) *ConversionUpdateOne {
+	if v != nil {
+		_u.SetInt16ToString(*v)
+	}
+	return _u
+}
+
+// ClearInt16ToString clears the value of the "int16_to_string" field.
+func (_u *ConversionUpdateOne) ClearInt16ToString() *ConversionUpdateOne {
+	_u.mutation.ClearInt16ToString()
+	return _u
+}
+
+// SetUint16ToString sets the "uint16_to_string" field.
+func (_u *ConversionUpdateOne) SetUint16ToString(v string) *ConversionUpdateOne {
+	_u.mutation.SetUint16ToString(v)
+	return _u
+}
+
+// SetNillableUint16ToString sets the "uint16_to_string" field if the given value is not nil.
+func (_u *ConversionUpdateOne) SetNillableUint16ToString(v *string) *ConversionUpdateOne {
+	if v != nil {
+		_u.SetUint16ToString(*v)
+	}
+	return _u
+}
+
+// ClearUint16ToString clears the value of the "uint16_to_string" field.
+func (_u *ConversionUpdateOne) ClearUint16ToString() *ConversionUpdateOne {
+	_u.mutation.ClearUint16ToString()
+	return _u
+}
+
+// SetInt32ToString sets the "int32_to_string" field.
+func (_u *ConversionUpdateOne) SetInt32ToString(v string) *ConversionUpdateOne {
+	_u.mutation.SetInt32ToString(v)
+	return _u
+}
+
+// SetNillableInt32ToString sets the "int32_to_string" field if the given value is not nil.
+func (_u *ConversionUpdateOne) SetNillableInt32ToString(v *string) *ConversionUpdateOne {
+	if v != nil {
+		_u.SetInt32ToString(*v)
+	}
+	return _u
+}
+
+// ClearInt32ToString clears the value of the "int32_to_string" field.
+func (_u *ConversionUpdateOne) ClearInt32ToString() *ConversionUpdateOne {
+	_u.mutation.ClearInt32ToString()
+	return _u
+}
+
+// SetUint32ToString sets the "uint32_to_string" field.
+func (_u *ConversionUpdateOne) SetUint32ToString(v string) *ConversionUpdateOne {
+	_u.mutation.SetUint32ToString(v)
+	return _u
+}
+
+// SetNillableUint32ToString sets the "uint32_to_string" field if the given value is not nil.
+func (_u *ConversionUpdateOne) SetNillableUint32ToString(v *string) *ConversionUpdateOne {
+	if v != nil {
+		_u.SetUint32ToString(*v)
+	}
+	return _u
+}
+
+// ClearUint32ToString clears the value of the "uint32_to_string" field.
+func (_u *ConversionUpdateOne) ClearUint32ToString() *ConversionUpdateOne {
+	_u.mutation.ClearUint32ToString()
+	return _u
+}
+
+// SetInt64ToString sets the "int64_to_string" field.
+func (_u *ConversionUpdateOne) SetInt64ToString(v string) *ConversionUpdateOne {
+	_u.mutation.SetInt64ToString(v)
+	return _u
+}
+
+// SetNillableInt64ToString sets the "int64_to_string" field if the given value is not nil.
+func (_u *ConversionUpdateOne) SetNillableInt64ToString(v *string) *ConversionUpdateOne {
+	if v != nil {
+		_u.SetInt64ToString(*v)
+	}
+	return _u
+}
+
+// ClearInt64ToString clears the value of the "int64_to_string" field.
+func (_u *ConversionUpdateOne) ClearInt64ToString() *ConversionUpdateOne {
+	_u.mutation.ClearInt64ToString()
+	return _u
+}
+
+// SetUint64ToString sets the "uint64_to_string" field.
+func (_u *ConversionUpdateOne) SetUint64ToString(v string) *ConversionUpdateOne {
+	_u.mutation.SetUint64ToString(v)
+	return _u
+}
+
+// SetNillableUint64ToString sets the "uint64_to_string" field if the given value is not nil.
+func (_u *ConversionUpdateOne) SetNillableUint64ToString(v *string) *ConversionUpdateOne {
+	if v != nil {
+		_u.SetUint64ToString(*v)
+	}
+	return _u
+}
+
+// ClearUint64ToString clears the value of the "uint64_to_string" field.
+func (_u *ConversionUpdateOne) ClearUint64ToString() *ConversionUpdateOne {
+	_u.mutation.ClearUint64ToString()
+	return _u
+}
+
+// Mutation returns the ConversionMutation object of the builder.
+func (_u *ConversionUpdateOne) Mutation() *ConversionMutation {
+	return _u.mutation
+}
+
+// Where appends a list predicates to the ConversionUpdate builder.
+func (_u *ConversionUpdateOne) Where(ps ...predicate.Conversion) *ConversionUpdateOne {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (_u *ConversionUpdateOne) Select(field string, fields ...string) *ConversionUpdateOne {
+	_u.fields = append([]string{field}, fields...)
+	return _u
+}
+
+// Save executes the query and returns the updated Conversion entity.
+func (_u *ConversionUpdateOne) Save(ctx context.Context) (*Conversion, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *ConversionUpdateOne) SaveX(ctx context.Context) *Conversion {
+	node, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (_u *ConversionUpdateOne) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *ConversionUpdateOne) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *ConversionUpdateOne) sqlSave(ctx context.Context) (_node *Conversion, err error) {
+	_spec := sqlgraph.NewUpdateSpec(conversion.Table, conversion.Columns, sqlgraph.NewFieldSpec(conversion.FieldID, field.TypeInt))
+	id, ok := _u.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "id", err: errors.New(`entv2: missing "Conversion.id" for update`)}
+	}
+	_spec.Node.ID.Value = id
+	if fields := _u.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, conversion.FieldID)
+		for _, f := range fields {
+			if !conversion.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+			}
+			if f != conversion.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Name(); ok {
+		_spec.SetField(conversion.FieldName, field.TypeString, value)
+	}
+	if _u.mutation.NameCleared() {
+		_spec.ClearField(conversion.FieldName, field.TypeString)
+	}
+	if value, ok := _u.mutation.Int8ToString(); ok {
+		_spec.SetField(conversion.FieldInt8ToString, field.TypeString, value)
+	}
+	if _u.mutation.Int8ToStringCleared() {
+		_spec.ClearField(conversion.FieldInt8ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Uint8ToString(); ok {
+		_spec.SetField(conversion.FieldUint8ToString, field.TypeString, value)
+	}
+	if _u.mutation.Uint8ToStringCleared() {
+		_spec.ClearField(conversion.FieldUint8ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Int16ToString(); ok {
+		_spec.SetField(conversion.FieldInt16ToString, field.TypeString, value)
+	}
+	if _u.mutation.Int16ToStringCleared() {
+		_spec.ClearField(conversion.FieldInt16ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Uint16ToString(); ok {
+		_spec.SetField(conversion.FieldUint16ToString, field.TypeString, value)
+	}
+	if _u.mutation.Uint16ToStringCleared() {
+		_spec.ClearField(conversion.FieldUint16ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Int32ToString(); ok {
+		_spec.SetField(conversion.FieldInt32ToString, field.TypeString, value)
+	}
+	if _u.mutation.Int32ToStringCleared() {
+		_spec.ClearField(conversion.FieldInt32ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Uint32ToString(); ok {
+		_spec.SetField(conversion.FieldUint32ToString, field.TypeString, value)
+	}
+	if _u.mutation.Uint32ToStringCleared() {
+		_spec.ClearField(conversion.FieldUint32ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Int64ToString(); ok {
+		_spec.SetField(conversion.FieldInt64ToString, field.TypeString, value)
+	}
+	if _u.mutation.Int64ToStringCleared() {
+		_spec.ClearField(conversion.FieldInt64ToString, field.TypeString)
+	}
+	if value, ok := _u.mutation.Uint64ToString(); ok {
+		_spec.SetField(conversion.FieldUint64ToString, field.TypeString, value)
+	}
+	if _u.mutation.Uint64ToStringCleared() {
+		_spec.ClearField(conversion.FieldUint64ToString, field.TypeString)
+	}
+	_node = &Conversion{config: _u.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{conversion.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}

entc/integration/migrate/entv2/customtype.go

@@ -0,0 +1,132 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/customtype"
+)
+
+// CustomType is the model entity for the CustomType schema.
+type CustomType struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int `json:"id,omitempty"`
+	// Custom holds the value of the "custom" field.
+	Custom string `json:"custom,omitempty"`
+	// Tz0 holds the value of the "tz0" field.
+	Tz0 time.Time `json:"tz0,omitempty"`
+	// Tz3 holds the value of the "tz3" field.
+	Tz3          time.Time `json:"tz3,omitempty"`
+	selectValues sql.SelectValues
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*CustomType) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case customtype.FieldID:
+			values[i] = new(sql.NullInt64)
+		case customtype.FieldCustom:
+			values[i] = new(sql.NullString)
+		case customtype.FieldTz0, customtype.FieldTz3:
+			values[i] = new(sql.NullTime)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the CustomType fields.
+func (_m *CustomType) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case customtype.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int(value.Int64)
+		case customtype.FieldCustom:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field custom", values[i])
+			} else if value.Valid {
+				_m.Custom = value.String
+			}
+		case customtype.FieldTz0:
+			if value, ok := values[i].(*sql.NullTime); !ok {
+				return fmt.Errorf("unexpected type %T for field tz0", values[i])
+			} else if value.Valid {
+				_m.Tz0 = value.Time
+			}
+		case customtype.FieldTz3:
+			if value, ok := values[i].(*sql.NullTime); !ok {
+				return fmt.Errorf("unexpected type %T for field tz3", values[i])
+			} else if value.Valid {
+				_m.Tz3 = value.Time
+			}
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the CustomType.
+// This includes values selected through modifiers, order, etc.
+func (_m *CustomType) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// Update returns a builder for updating this CustomType.
+// Note that you need to call CustomType.Unwrap() before calling this method if this CustomType
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *CustomType) Update() *CustomTypeUpdateOne {
+	return NewCustomTypeClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the CustomType entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *CustomType) Unwrap() *CustomType {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("entv2: CustomType is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *CustomType) String() string {
+	var builder strings.Builder
+	builder.WriteString("CustomType(")
+	builder.WriteString(fmt.Sprintf("id=%v, ", _m.ID))
+	builder.WriteString("custom=")
+	builder.WriteString(_m.Custom)
+	builder.WriteString(", ")
+	builder.WriteString("tz0=")
+	builder.WriteString(_m.Tz0.Format(time.ANSIC))
+	builder.WriteString(", ")
+	builder.WriteString("tz3=")
+	builder.WriteString(_m.Tz3.Format(time.ANSIC))
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// CustomTypes is a parsable slice of CustomType.
+type CustomTypes []*CustomType

entc/integration/migrate/entv2/customtype/customtype.go

@@ -0,0 +1,67 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package customtype
+
+import (
+	"entgo.io/ent/dialect/sql"
+)
+
+const (
+	// Label holds the string label denoting the customtype type in the database.
+	Label = "custom_type"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldCustom holds the string denoting the custom field in the database.
+	FieldCustom = "custom"
+	// FieldTz0 holds the string denoting the tz0 field in the database.
+	FieldTz0 = "tz0"
+	// FieldTz3 holds the string denoting the tz3 field in the database.
+	FieldTz3 = "tz3"
+	// Table holds the table name of the customtype in the database.
+	Table = "custom_types"
+)
+
+// Columns holds all SQL columns for customtype fields.
+var Columns = []string{
+	FieldID,
+	FieldCustom,
+	FieldTz0,
+	FieldTz3,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+// OrderOption defines the ordering options for the CustomType queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByCustom orders the results by the custom field.
+func ByCustom(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldCustom, opts...).ToFunc()
+}
+
+// ByTz0 orders the results by the tz0 field.
+func ByTz0(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldTz0, opts...).ToFunc()
+}
+
+// ByTz3 orders the results by the tz3 field.
+func ByTz3(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldTz3, opts...).ToFunc()
+}

entc/integration/migrate/entv2/customtype/mutation.go

@@ -0,0 +1,364 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package customtype
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// Mutation represents an operation that mutates the CustomType nodes in the graph.
+type Mutation struct {
+	op            ent.Op
+	typ           string
+	custom        *string
+	tz0           *time.Time
+	tz3           *time.Time
+	clearedFields map[string]struct{}
+	predicates    []predicate.CustomType
+}
+
+// NewMutation creates a new Mutation for the CustomType entity.
+func NewMutation(op ent.Op) *Mutation {
+	return &Mutation{
+		op:            op,
+		typ:           "CustomType",
+		clearedFields: make(map[string]struct{}),
+	}
+}
+
+// Predicates returns the list of predicates set on the mutation.
+func (m *Mutation) Predicates() []predicate.CustomType {
+	return m.predicates
+}
+
+// SetCustom sets the "custom" field.
+func (m *Mutation) SetCustom(s string) {
+	m.custom = &s
+}
+
+// Custom returns the value of the "custom" field in the mutation.
+func (m *Mutation) Custom() (r string, exists bool) {
+	v := m.custom
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearCustom clears the value of the "custom" field.
+func (m *Mutation) ClearCustom() {
+	m.custom = nil
+	m.clearedFields[FieldCustom] = struct{}{}
+}
+
+// CustomCleared returns if the "custom" field was cleared in this mutation.
+func (m *Mutation) CustomCleared() bool {
+	_, ok := m.clearedFields[FieldCustom]
+	return ok
+}
+
+// ResetCustom resets all changes to the "custom" field.
+func (m *Mutation) ResetCustom() {
+	m.custom = nil
+	delete(m.clearedFields, FieldCustom)
+}
+
+// SetTz0 sets the "tz0" field.
+func (m *Mutation) SetTz0(t time.Time) {
+	m.tz0 = &t
+}
+
+// Tz0 returns the value of the "tz0" field in the mutation.
+func (m *Mutation) Tz0() (r time.Time, exists bool) {
+	v := m.tz0
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearTz0 clears the value of the "tz0" field.
+func (m *Mutation) ClearTz0() {
+	m.tz0 = nil
+	m.clearedFields[FieldTz0] = struct{}{}
+}
+
+// Tz0Cleared returns if the "tz0" field was cleared in this mutation.
+func (m *Mutation) Tz0Cleared() bool {
+	_, ok := m.clearedFields[FieldTz0]
+	return ok
+}
+
+// ResetTz0 resets all changes to the "tz0" field.
+func (m *Mutation) ResetTz0() {
+	m.tz0 = nil
+	delete(m.clearedFields, FieldTz0)
+}
+
+// SetTz3 sets the "tz3" field.
+func (m *Mutation) SetTz3(t time.Time) {
+	m.tz3 = &t
+}
+
+// Tz3 returns the value of the "tz3" field in the mutation.
+func (m *Mutation) Tz3() (r time.Time, exists bool) {
+	v := m.tz3
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearTz3 clears the value of the "tz3" field.
+func (m *Mutation) ClearTz3() {
+	m.tz3 = nil
+	m.clearedFields[FieldTz3] = struct{}{}
+}
+
+// Tz3Cleared returns if the "tz3" field was cleared in this mutation.
+func (m *Mutation) Tz3Cleared() bool {
+	_, ok := m.clearedFields[FieldTz3]
+	return ok
+}
+
+// ResetTz3 resets all changes to the "tz3" field.
+func (m *Mutation) ResetTz3() {
+	m.tz3 = nil
+	delete(m.clearedFields, FieldTz3)
+}
+
+// Where appends a list predicates to the Mutation builder.
+func (m *Mutation) Where(ps ...predicate.CustomType) {
+	m.predicates = append(m.predicates, ps...)
+}
+
+// WhereP appends storage-level predicates to the Mutation builder. Using this method,
+// users can use type-assertion to append predicates that do not depend on any generated package.
+func (m *Mutation) WhereP(ps ...func(*sql.Selector)) {
+	p := make([]predicate.CustomType, len(ps))
+	for i := range ps {
+		p[i] = ps[i]
+	}
+	m.Where(p...)
+}
+
+// Op returns the operation name.
+func (m *Mutation) Op() ent.Op {
+	return m.op
+}
+
+// SetOp allows setting the mutation operation.
+func (m *Mutation) SetOp(op ent.Op) {
+	m.op = op
+}
+
+// Type returns the node type of this mutation (CustomType).
+func (m *Mutation) Type() string {
+	return m.typ
+}
+
+// Fields returns all fields that were changed during this mutation. Note that in
+// order to get all numeric fields that were incremented/decremented, call
+// AddedFields().
+func (m *Mutation) Fields() []string {
+	fields := make([]string, 0, 3)
+	if m.custom != nil {
+		fields = append(fields, FieldCustom)
+	}
+	if m.tz0 != nil {
+		fields = append(fields, FieldTz0)
+	}
+	if m.tz3 != nil {
+		fields = append(fields, FieldTz3)
+	}
+	return fields
+}
+
+// Field returns the value of a field with the given name. The second boolean
+// return value indicates that this field was not set, or was not defined in the
+// schema.
+func (m *Mutation) Field(name string) (ent.Value, bool) {
+	switch name {
+	case FieldCustom:
+		return m.Custom()
+	case FieldTz0:
+		return m.Tz0()
+	case FieldTz3:
+		return m.Tz3()
+	}
+	return nil, false
+}
+
+// OldField returns the old value of the field from the database. An error is
+// returned if the mutation operation is not UpdateOne, or the query to the
+// database failed.
+func (m *Mutation) OldField(ctx context.Context, name string) (ent.Value, error) {
+	return nil, fmt.Errorf("unknown CustomType field %s", name)
+}
+
+// SetField sets the value of a field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) SetField(name string, value ent.Value) error {
+	switch name {
+	case FieldCustom:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetCustom(v)
+		return nil
+	case FieldTz0:
+		v, ok := value.(time.Time)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetTz0(v)
+		return nil
+	case FieldTz3:
+		v, ok := value.(time.Time)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetTz3(v)
+		return nil
+	}
+	return fmt.Errorf("unknown CustomType field %s", name)
+}
+
+// AddedFields returns all numeric fields that were incremented/decremented during
+// this mutation.
+func (m *Mutation) AddedFields() []string {
+	return nil
+}
+
+// AddedField returns the numeric value that was incremented/decremented on a field
+// with the given name. The second boolean return value indicates that this field
+// was not set, or was not defined in the schema.
+func (m *Mutation) AddedField(name string) (ent.Value, bool) {
+	return nil, false
+}
+
+// AddField adds the value to the field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) AddField(name string, value ent.Value) error {
+	switch name {
+	}
+	return fmt.Errorf("unknown CustomType numeric field %s", name)
+}
+
+// ClearedFields returns all nullable fields that were cleared during this
+// mutation.
+func (m *Mutation) ClearedFields() []string {
+	var fields []string
+	if m.FieldCleared(FieldCustom) {
+		fields = append(fields, FieldCustom)
+	}
+	if m.FieldCleared(FieldTz0) {
+		fields = append(fields, FieldTz0)
+	}
+	if m.FieldCleared(FieldTz3) {
+		fields = append(fields, FieldTz3)
+	}
+	return fields
+}
+
+// FieldCleared returns a boolean indicating if a field with the given name was
+// cleared in this mutation.
+func (m *Mutation) FieldCleared(name string) bool {
+	_, ok := m.clearedFields[name]
+	return ok
+}
+
+// ClearField clears the value of the field with the given name. It returns an
+// error if the field is not defined in the schema.
+func (m *Mutation) ClearField(name string) error {
+	switch name {
+	case FieldCustom:
+		m.ClearCustom()
+		return nil
+	case FieldTz0:
+		m.ClearTz0()
+		return nil
+	case FieldTz3:
+		m.ClearTz3()
+		return nil
+	}
+	return fmt.Errorf("unknown CustomType nullable field %s", name)
+}
+
+// ResetField resets all changes in the mutation for the field with the given name.
+// It returns an error if the field is not defined in the schema.
+func (m *Mutation) ResetField(name string) error {
+	switch name {
+	case FieldCustom:
+		m.ResetCustom()
+		return nil
+	case FieldTz0:
+		m.ResetTz0()
+		return nil
+	case FieldTz3:
+		m.ResetTz3()
+		return nil
+	}
+	return fmt.Errorf("unknown CustomType field %s", name)
+}
+
+// AddedEdges returns all edge names that were set/added in this mutation.
+func (m *Mutation) AddedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// AddedIDs returns all IDs (to other nodes) that were added for the given edge
+// name in this mutation.
+func (m *Mutation) AddedIDs(name string) []ent.Value {
+	return nil
+}
+
+// RemovedEdges returns all edge names that were removed in this mutation.
+func (m *Mutation) RemovedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
+// the given name in this mutation.
+func (m *Mutation) RemovedIDs(name string) []ent.Value {
+	return nil
+}
+
+// ClearedEdges returns all edge names that were cleared in this mutation.
+func (m *Mutation) ClearedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// EdgeCleared returns a boolean which indicates if the edge with the given name
+// was cleared in this mutation.
+func (m *Mutation) EdgeCleared(name string) bool {
+	return false
+}
+
+// ClearEdge clears the value of the edge with the given name. It returns an error
+// if that edge is not defined in the schema.
+func (m *Mutation) ClearEdge(name string) error {
+	return fmt.Errorf("unknown CustomType unique edge %s", name)
+}
+
+// ResetEdge resets all changes to the edge with the given name in this mutation.
+// It returns an error if the edge is not defined in the schema.
+func (m *Mutation) ResetEdge(name string) error {
+	return fmt.Errorf("unknown CustomType edge %s", name)
+}

entc/integration/migrate/entv2/customtype/where.go

@@ -0,0 +1,264 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package customtype
+
+import (
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int) predicate.CustomType {
+	return predicate.CustomType(sql.FieldEQ(FieldID, id))
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int) predicate.CustomType {
+	return predicate.CustomType(sql.FieldEQ(FieldID, id))
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int) predicate.CustomType {
+	return predicate.CustomType(sql.FieldNEQ(FieldID, id))
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int) predicate.CustomType {
+	return predicate.CustomType(sql.FieldIn(FieldID, ids...))
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int) predicate.CustomType {
+	return predicate.CustomType(sql.FieldNotIn(FieldID, ids...))
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int) predicate.CustomType {
+	return predicate.CustomType(sql.FieldGT(FieldID, id))
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int) predicate.CustomType {
+	return predicate.CustomType(sql.FieldGTE(FieldID, id))
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int) predicate.CustomType {
+	return predicate.CustomType(sql.FieldLT(FieldID, id))
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int) predicate.CustomType {
+	return predicate.CustomType(sql.FieldLTE(FieldID, id))
+}
+
+// Custom applies equality check predicate on the "custom" field. It's identical to CustomEQ.
+func Custom(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldEQ(FieldCustom, v))
+}
+
+// Tz0 applies equality check predicate on the "tz0" field. It's identical to Tz0EQ.
+func Tz0(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldEQ(FieldTz0, v))
+}
+
+// Tz3 applies equality check predicate on the "tz3" field. It's identical to Tz3EQ.
+func Tz3(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldEQ(FieldTz3, v))
+}
+
+// CustomEQ applies the EQ predicate on the "custom" field.
+func CustomEQ(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldEQ(FieldCustom, v))
+}
+
+// CustomNEQ applies the NEQ predicate on the "custom" field.
+func CustomNEQ(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldNEQ(FieldCustom, v))
+}
+
+// CustomIn applies the In predicate on the "custom" field.
+func CustomIn(vs ...string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldIn(FieldCustom, vs...))
+}
+
+// CustomNotIn applies the NotIn predicate on the "custom" field.
+func CustomNotIn(vs ...string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldNotIn(FieldCustom, vs...))
+}
+
+// CustomGT applies the GT predicate on the "custom" field.
+func CustomGT(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldGT(FieldCustom, v))
+}
+
+// CustomGTE applies the GTE predicate on the "custom" field.
+func CustomGTE(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldGTE(FieldCustom, v))
+}
+
+// CustomLT applies the LT predicate on the "custom" field.
+func CustomLT(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldLT(FieldCustom, v))
+}
+
+// CustomLTE applies the LTE predicate on the "custom" field.
+func CustomLTE(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldLTE(FieldCustom, v))
+}
+
+// CustomContains applies the Contains predicate on the "custom" field.
+func CustomContains(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldContains(FieldCustom, v))
+}
+
+// CustomHasPrefix applies the HasPrefix predicate on the "custom" field.
+func CustomHasPrefix(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldHasPrefix(FieldCustom, v))
+}
+
+// CustomHasSuffix applies the HasSuffix predicate on the "custom" field.
+func CustomHasSuffix(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldHasSuffix(FieldCustom, v))
+}
+
+// CustomIsNil applies the IsNil predicate on the "custom" field.
+func CustomIsNil() predicate.CustomType {
+	return predicate.CustomType(sql.FieldIsNull(FieldCustom))
+}
+
+// CustomNotNil applies the NotNil predicate on the "custom" field.
+func CustomNotNil() predicate.CustomType {
+	return predicate.CustomType(sql.FieldNotNull(FieldCustom))
+}
+
+// CustomEqualFold applies the EqualFold predicate on the "custom" field.
+func CustomEqualFold(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldEqualFold(FieldCustom, v))
+}
+
+// CustomContainsFold applies the ContainsFold predicate on the "custom" field.
+func CustomContainsFold(v string) predicate.CustomType {
+	return predicate.CustomType(sql.FieldContainsFold(FieldCustom, v))
+}
+
+// Tz0EQ applies the EQ predicate on the "tz0" field.
+func Tz0EQ(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldEQ(FieldTz0, v))
+}
+
+// Tz0NEQ applies the NEQ predicate on the "tz0" field.
+func Tz0NEQ(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldNEQ(FieldTz0, v))
+}
+
+// Tz0In applies the In predicate on the "tz0" field.
+func Tz0In(vs ...time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldIn(FieldTz0, vs...))
+}
+
+// Tz0NotIn applies the NotIn predicate on the "tz0" field.
+func Tz0NotIn(vs ...time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldNotIn(FieldTz0, vs...))
+}
+
+// Tz0GT applies the GT predicate on the "tz0" field.
+func Tz0GT(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldGT(FieldTz0, v))
+}
+
+// Tz0GTE applies the GTE predicate on the "tz0" field.
+func Tz0GTE(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldGTE(FieldTz0, v))
+}
+
+// Tz0LT applies the LT predicate on the "tz0" field.
+func Tz0LT(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldLT(FieldTz0, v))
+}
+
+// Tz0LTE applies the LTE predicate on the "tz0" field.
+func Tz0LTE(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldLTE(FieldTz0, v))
+}
+
+// Tz0IsNil applies the IsNil predicate on the "tz0" field.
+func Tz0IsNil() predicate.CustomType {
+	return predicate.CustomType(sql.FieldIsNull(FieldTz0))
+}
+
+// Tz0NotNil applies the NotNil predicate on the "tz0" field.
+func Tz0NotNil() predicate.CustomType {
+	return predicate.CustomType(sql.FieldNotNull(FieldTz0))
+}
+
+// Tz3EQ applies the EQ predicate on the "tz3" field.
+func Tz3EQ(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldEQ(FieldTz3, v))
+}
+
+// Tz3NEQ applies the NEQ predicate on the "tz3" field.
+func Tz3NEQ(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldNEQ(FieldTz3, v))
+}
+
+// Tz3In applies the In predicate on the "tz3" field.
+func Tz3In(vs ...time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldIn(FieldTz3, vs...))
+}
+
+// Tz3NotIn applies the NotIn predicate on the "tz3" field.
+func Tz3NotIn(vs ...time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldNotIn(FieldTz3, vs...))
+}
+
+// Tz3GT applies the GT predicate on the "tz3" field.
+func Tz3GT(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldGT(FieldTz3, v))
+}
+
+// Tz3GTE applies the GTE predicate on the "tz3" field.
+func Tz3GTE(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldGTE(FieldTz3, v))
+}
+
+// Tz3LT applies the LT predicate on the "tz3" field.
+func Tz3LT(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldLT(FieldTz3, v))
+}
+
+// Tz3LTE applies the LTE predicate on the "tz3" field.
+func Tz3LTE(v time.Time) predicate.CustomType {
+	return predicate.CustomType(sql.FieldLTE(FieldTz3, v))
+}
+
+// Tz3IsNil applies the IsNil predicate on the "tz3" field.
+func Tz3IsNil() predicate.CustomType {
+	return predicate.CustomType(sql.FieldIsNull(FieldTz3))
+}
+
+// Tz3NotNil applies the NotNil predicate on the "tz3" field.
+func Tz3NotNil() predicate.CustomType {
+	return predicate.CustomType(sql.FieldNotNull(FieldTz3))
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.CustomType) predicate.CustomType {
+	return predicate.CustomType(sql.AndPredicates(predicates...))
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.CustomType) predicate.CustomType {
+	return predicate.CustomType(sql.OrPredicates(predicates...))
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.CustomType) predicate.CustomType {
+	return predicate.CustomType(sql.NotPredicates(p))
+}

entc/integration/migrate/entv2/customtype_create.go

@@ -0,0 +1,228 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/customtype"
+	"entgo.io/ent/schema/field"
+)
+
+// CustomTypeCreate is the builder for creating a CustomType entity.
+type CustomTypeCreate struct {
+	config
+	mutation *CustomTypeMutation
+	hooks    []Hook
+}
+
+// SetCustom sets the "custom" field.
+func (_c *CustomTypeCreate) SetCustom(v string) *CustomTypeCreate {
+	_c.mutation.SetCustom(v)
+	return _c
+}
+
+// SetNillableCustom sets the "custom" field if the given value is not nil.
+func (_c *CustomTypeCreate) SetNillableCustom(v *string) *CustomTypeCreate {
+	if v != nil {
+		_c.SetCustom(*v)
+	}
+	return _c
+}
+
+// SetTz0 sets the "tz0" field.
+func (_c *CustomTypeCreate) SetTz0(v time.Time) *CustomTypeCreate {
+	_c.mutation.SetTz0(v)
+	return _c
+}
+
+// SetNillableTz0 sets the "tz0" field if the given value is not nil.
+func (_c *CustomTypeCreate) SetNillableTz0(v *time.Time) *CustomTypeCreate {
+	if v != nil {
+		_c.SetTz0(*v)
+	}
+	return _c
+}
+
+// SetTz3 sets the "tz3" field.
+func (_c *CustomTypeCreate) SetTz3(v time.Time) *CustomTypeCreate {
+	_c.mutation.SetTz3(v)
+	return _c
+}
+
+// SetNillableTz3 sets the "tz3" field if the given value is not nil.
+func (_c *CustomTypeCreate) SetNillableTz3(v *time.Time) *CustomTypeCreate {
+	if v != nil {
+		_c.SetTz3(*v)
+	}
+	return _c
+}
+
+// Mutation returns the CustomTypeMutation object of the builder.
+func (_c *CustomTypeCreate) Mutation() *CustomTypeMutation {
+	return _c.mutation
+}
+
+// Save creates the CustomType in the database.
+func (_c *CustomTypeCreate) Save(ctx context.Context) (*CustomType, error) {
+	return withHooks(ctx, _c.sqlSave, _c.mutation, _c.hooks)
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (_c *CustomTypeCreate) SaveX(ctx context.Context) *CustomType {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *CustomTypeCreate) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *CustomTypeCreate) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_c *CustomTypeCreate) check() error {
+	return nil
+}
+
+func (_c *CustomTypeCreate) sqlSave(ctx context.Context) (*CustomType, error) {
+	if err := _c.check(); err != nil {
+		return nil, err
+	}
+	_node, _spec := _c.createSpec()
+	if err := sqlgraph.CreateNode(ctx, _c.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	id := _spec.ID.Value.(int64)
+	_node.ID = int(id)
+	_c.mutation.id = &_node.ID
+	_c.mutation.done = true
+	return _node, nil
+}
+
+func (_c *CustomTypeCreate) createSpec() (*CustomType, *sqlgraph.CreateSpec) {
+	var (
+		_node = &CustomType{config: _c.config}
+		_spec = sqlgraph.NewCreateSpec(customtype.Table, sqlgraph.NewFieldSpec(customtype.FieldID, field.TypeInt))
+	)
+	if value, ok := _c.mutation.Custom(); ok {
+		_spec.SetField(customtype.FieldCustom, field.TypeString, value)
+		_node.Custom = value
+	}
+	if value, ok := _c.mutation.Tz0(); ok {
+		_spec.SetField(customtype.FieldTz0, field.TypeTime, value)
+		_node.Tz0 = value
+	}
+	if value, ok := _c.mutation.Tz3(); ok {
+		_spec.SetField(customtype.FieldTz3, field.TypeTime, value)
+		_node.Tz3 = value
+	}
+	return _node, _spec
+}
+
+// CustomTypeCreateBulk is the builder for creating many CustomType entities in bulk.
+type CustomTypeCreateBulk struct {
+	config
+	err      error
+	builders []*CustomTypeCreate
+}
+
+// Save creates the CustomType entities in the database.
+func (_c *CustomTypeCreateBulk) Save(ctx context.Context) ([]*CustomType, error) {
+	if _c.err != nil {
+		return nil, _c.err
+	}
+	specs := make([]*sqlgraph.CreateSpec, len(_c.builders))
+	nodes := make([]*CustomType, len(_c.builders))
+	mutators := make([]Mutator, len(_c.builders))
+	for i := range _c.builders {
+		func(i int, root context.Context) {
+			builder := _c.builders[i]
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*CustomTypeMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				var err error
+				nodes[i], specs[i] = builder.createSpec()
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, _c.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, _c.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{msg: err.Error(), wrap: err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				if specs[i].ID.Value != nil {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int(id)
+				}
+				mutation.done = true
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, _c.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_c *CustomTypeCreateBulk) SaveX(ctx context.Context) []*CustomType {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *CustomTypeCreateBulk) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *CustomTypeCreateBulk) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/customtype_delete.go

@@ -0,0 +1,92 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/customtype"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// CustomTypeDelete is the builder for deleting a CustomType entity.
+type CustomTypeDelete struct {
+	config
+	hooks    []Hook
+	mutation *CustomTypeMutation
+}
+
+// Where appends a list predicates to the CustomTypeDelete builder.
+func (_d *CustomTypeDelete) Where(ps ...predicate.CustomType) *CustomTypeDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *CustomTypeDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *CustomTypeDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *CustomTypeDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(customtype.Table, sqlgraph.NewFieldSpec(customtype.FieldID, field.TypeInt))
+	if ps := _d.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// CustomTypeDeleteOne is the builder for deleting a single CustomType entity.
+type CustomTypeDeleteOne struct {
+	_d *CustomTypeDelete
+}
+
+// Where appends a list predicates to the CustomTypeDelete builder.
+func (_d *CustomTypeDeleteOne) Where(ps ...predicate.CustomType) *CustomTypeDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *CustomTypeDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{customtype.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *CustomTypeDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/customtype_query.go

@@ -0,0 +1,531 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/customtype"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// CustomTypeQuery is the builder for querying CustomType entities.
+type CustomTypeQuery struct {
+	config
+	ctx        *QueryContext
+	order      []customtype.OrderOption
+	inters     []Interceptor
+	predicates []predicate.CustomType
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the CustomTypeQuery builder.
+func (_q *CustomTypeQuery) Where(ps ...predicate.CustomType) *CustomTypeQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *CustomTypeQuery) Limit(limit int) *CustomTypeQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *CustomTypeQuery) Offset(offset int) *CustomTypeQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *CustomTypeQuery) Unique(unique bool) *CustomTypeQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *CustomTypeQuery) Order(o ...customtype.OrderOption) *CustomTypeQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// First returns the first CustomType entity from the query.
+// Returns a *NotFoundError when no CustomType was found.
+func (_q *CustomTypeQuery) First(ctx context.Context) (*CustomType, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{customtype.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *CustomTypeQuery) FirstX(ctx context.Context) *CustomType {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first CustomType ID from the query.
+// Returns a *NotFoundError when no CustomType ID was found.
+func (_q *CustomTypeQuery) FirstID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{customtype.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *CustomTypeQuery) FirstIDX(ctx context.Context) int {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single CustomType entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one CustomType entity is found.
+// Returns a *NotFoundError when no CustomType entities are found.
+func (_q *CustomTypeQuery) Only(ctx context.Context) (*CustomType, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{customtype.Label}
+	default:
+		return nil, &NotSingularError{customtype.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *CustomTypeQuery) OnlyX(ctx context.Context) *CustomType {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only CustomType ID in the query.
+// Returns a *NotSingularError when more than one CustomType ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *CustomTypeQuery) OnlyID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{customtype.Label}
+	default:
+		err = &NotSingularError{customtype.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *CustomTypeQuery) OnlyIDX(ctx context.Context) int {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of CustomTypes.
+func (_q *CustomTypeQuery) All(ctx context.Context) ([]*CustomType, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*CustomType, *CustomTypeQuery]()
+	return withInterceptors[[]*CustomType](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *CustomTypeQuery) AllX(ctx context.Context) []*CustomType {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of CustomType IDs.
+func (_q *CustomTypeQuery) IDs(ctx context.Context) (ids []int, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(customtype.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *CustomTypeQuery) IDsX(ctx context.Context) []int {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *CustomTypeQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*CustomTypeQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *CustomTypeQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *CustomTypeQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("entv2: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *CustomTypeQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the CustomTypeQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *CustomTypeQuery) Clone() *CustomTypeQuery {
+	if _q == nil {
+		return nil
+	}
+	return &CustomTypeQuery{
+		config:     _q.config,
+		ctx:        _q.ctx.Clone(),
+		order:      append([]customtype.OrderOption{}, _q.order...),
+		inters:     append([]Interceptor{}, _q.inters...),
+		predicates: append([]predicate.CustomType{}, _q.predicates...),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		Custom string `json:"custom,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.CustomType.Query().
+//		GroupBy(customtype.FieldCustom).
+//		Aggregate(entv2.Count()).
+//		Scan(ctx, &v)
+func (_q *CustomTypeQuery) GroupBy(field string, fields ...string) *CustomTypeGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &CustomTypeGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = customtype.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		Custom string `json:"custom,omitempty"`
+//	}
+//
+//	client.CustomType.Query().
+//		Select(customtype.FieldCustom).
+//		Scan(ctx, &v)
+func (_q *CustomTypeQuery) Select(fields ...string) *CustomTypeSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &CustomTypeSelect{CustomTypeQuery: _q}
+	sbuild.label = customtype.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a CustomTypeSelect configured with the given aggregations.
+func (_q *CustomTypeQuery) Aggregate(fns ...AggregateFunc) *CustomTypeSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *CustomTypeQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("entv2: uninitialized interceptor (forgotten import entv2/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !customtype.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *CustomTypeQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*CustomType, error) {
+	var (
+		nodes = []*CustomType{}
+		_spec = _q.querySpec()
+	)
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*CustomType).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &CustomType{config: _q.config}
+		nodes = append(nodes, node)
+		return node.assignValues(columns, values)
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	return nodes, nil
+}
+
+func (_q *CustomTypeQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *CustomTypeQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(customtype.Table, customtype.Columns, sqlgraph.NewFieldSpec(customtype.FieldID, field.TypeInt))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, customtype.FieldID)
+		for i := range fields {
+			if fields[i] != customtype.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *CustomTypeQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(customtype.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = customtype.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// CustomTypeGroupBy is the group-by builder for CustomType entities.
+type CustomTypeGroupBy struct {
+	selector
+	build *CustomTypeQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *CustomTypeGroupBy) Aggregate(fns ...AggregateFunc) *CustomTypeGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *CustomTypeGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*CustomTypeQuery, *CustomTypeGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *CustomTypeGroupBy) sqlScan(ctx context.Context, root *CustomTypeQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// CustomTypeSelect is the builder for selecting fields of CustomType entities.
+type CustomTypeSelect struct {
+	*CustomTypeQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *CustomTypeSelect) Aggregate(fns ...AggregateFunc) *CustomTypeSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *CustomTypeSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*CustomTypeQuery, *CustomTypeSelect](ctx, _s.CustomTypeQuery, _s, _s.inters, v)
+}
+
+func (_s *CustomTypeSelect) sqlScan(ctx context.Context, root *CustomTypeQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

entc/integration/migrate/entv2/customtype_update.go

@@ -0,0 +1,336 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/customtype"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// CustomTypeUpdate is the builder for updating CustomType entities.
+type CustomTypeUpdate struct {
+	config
+	hooks    []Hook
+	mutation *CustomTypeMutation
+}
+
+// Where appends a list predicates to the CustomTypeUpdate builder.
+func (_u *CustomTypeUpdate) Where(ps ...predicate.CustomType) *CustomTypeUpdate {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// SetCustom sets the "custom" field.
+func (_u *CustomTypeUpdate) SetCustom(v string) *CustomTypeUpdate {
+	_u.mutation.SetCustom(v)
+	return _u
+}
+
+// SetNillableCustom sets the "custom" field if the given value is not nil.
+func (_u *CustomTypeUpdate) SetNillableCustom(v *string) *CustomTypeUpdate {
+	if v != nil {
+		_u.SetCustom(*v)
+	}
+	return _u
+}
+
+// ClearCustom clears the value of the "custom" field.
+func (_u *CustomTypeUpdate) ClearCustom() *CustomTypeUpdate {
+	_u.mutation.ClearCustom()
+	return _u
+}
+
+// SetTz0 sets the "tz0" field.
+func (_u *CustomTypeUpdate) SetTz0(v time.Time) *CustomTypeUpdate {
+	_u.mutation.SetTz0(v)
+	return _u
+}
+
+// SetNillableTz0 sets the "tz0" field if the given value is not nil.
+func (_u *CustomTypeUpdate) SetNillableTz0(v *time.Time) *CustomTypeUpdate {
+	if v != nil {
+		_u.SetTz0(*v)
+	}
+	return _u
+}
+
+// ClearTz0 clears the value of the "tz0" field.
+func (_u *CustomTypeUpdate) ClearTz0() *CustomTypeUpdate {
+	_u.mutation.ClearTz0()
+	return _u
+}
+
+// SetTz3 sets the "tz3" field.
+func (_u *CustomTypeUpdate) SetTz3(v time.Time) *CustomTypeUpdate {
+	_u.mutation.SetTz3(v)
+	return _u
+}
+
+// SetNillableTz3 sets the "tz3" field if the given value is not nil.
+func (_u *CustomTypeUpdate) SetNillableTz3(v *time.Time) *CustomTypeUpdate {
+	if v != nil {
+		_u.SetTz3(*v)
+	}
+	return _u
+}
+
+// ClearTz3 clears the value of the "tz3" field.
+func (_u *CustomTypeUpdate) ClearTz3() *CustomTypeUpdate {
+	_u.mutation.ClearTz3()
+	return _u
+}
+
+// Mutation returns the CustomTypeMutation object of the builder.
+func (_u *CustomTypeUpdate) Mutation() *CustomTypeMutation {
+	return _u.mutation
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (_u *CustomTypeUpdate) Save(ctx context.Context) (int, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *CustomTypeUpdate) SaveX(ctx context.Context) int {
+	affected, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (_u *CustomTypeUpdate) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *CustomTypeUpdate) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *CustomTypeUpdate) sqlSave(ctx context.Context) (_node int, err error) {
+	_spec := sqlgraph.NewUpdateSpec(customtype.Table, customtype.Columns, sqlgraph.NewFieldSpec(customtype.FieldID, field.TypeInt))
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Custom(); ok {
+		_spec.SetField(customtype.FieldCustom, field.TypeString, value)
+	}
+	if _u.mutation.CustomCleared() {
+		_spec.ClearField(customtype.FieldCustom, field.TypeString)
+	}
+	if value, ok := _u.mutation.Tz0(); ok {
+		_spec.SetField(customtype.FieldTz0, field.TypeTime, value)
+	}
+	if _u.mutation.Tz0Cleared() {
+		_spec.ClearField(customtype.FieldTz0, field.TypeTime)
+	}
+	if value, ok := _u.mutation.Tz3(); ok {
+		_spec.SetField(customtype.FieldTz3, field.TypeTime, value)
+	}
+	if _u.mutation.Tz3Cleared() {
+		_spec.ClearField(customtype.FieldTz3, field.TypeTime)
+	}
+	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{customtype.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return 0, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}
+
+// CustomTypeUpdateOne is the builder for updating a single CustomType entity.
+type CustomTypeUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *CustomTypeMutation
+}
+
+// SetCustom sets the "custom" field.
+func (_u *CustomTypeUpdateOne) SetCustom(v string) *CustomTypeUpdateOne {
+	_u.mutation.SetCustom(v)
+	return _u
+}
+
+// SetNillableCustom sets the "custom" field if the given value is not nil.
+func (_u *CustomTypeUpdateOne) SetNillableCustom(v *string) *CustomTypeUpdateOne {
+	if v != nil {
+		_u.SetCustom(*v)
+	}
+	return _u
+}
+
+// ClearCustom clears the value of the "custom" field.
+func (_u *CustomTypeUpdateOne) ClearCustom() *CustomTypeUpdateOne {
+	_u.mutation.ClearCustom()
+	return _u
+}
+
+// SetTz0 sets the "tz0" field.
+func (_u *CustomTypeUpdateOne) SetTz0(v time.Time) *CustomTypeUpdateOne {
+	_u.mutation.SetTz0(v)
+	return _u
+}
+
+// SetNillableTz0 sets the "tz0" field if the given value is not nil.
+func (_u *CustomTypeUpdateOne) SetNillableTz0(v *time.Time) *CustomTypeUpdateOne {
+	if v != nil {
+		_u.SetTz0(*v)
+	}
+	return _u
+}
+
+// ClearTz0 clears the value of the "tz0" field.
+func (_u *CustomTypeUpdateOne) ClearTz0() *CustomTypeUpdateOne {
+	_u.mutation.ClearTz0()
+	return _u
+}
+
+// SetTz3 sets the "tz3" field.
+func (_u *CustomTypeUpdateOne) SetTz3(v time.Time) *CustomTypeUpdateOne {
+	_u.mutation.SetTz3(v)
+	return _u
+}
+
+// SetNillableTz3 sets the "tz3" field if the given value is not nil.
+func (_u *CustomTypeUpdateOne) SetNillableTz3(v *time.Time) *CustomTypeUpdateOne {
+	if v != nil {
+		_u.SetTz3(*v)
+	}
+	return _u
+}
+
+// ClearTz3 clears the value of the "tz3" field.
+func (_u *CustomTypeUpdateOne) ClearTz3() *CustomTypeUpdateOne {
+	_u.mutation.ClearTz3()
+	return _u
+}
+
+// Mutation returns the CustomTypeMutation object of the builder.
+func (_u *CustomTypeUpdateOne) Mutation() *CustomTypeMutation {
+	return _u.mutation
+}
+
+// Where appends a list predicates to the CustomTypeUpdate builder.
+func (_u *CustomTypeUpdateOne) Where(ps ...predicate.CustomType) *CustomTypeUpdateOne {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (_u *CustomTypeUpdateOne) Select(field string, fields ...string) *CustomTypeUpdateOne {
+	_u.fields = append([]string{field}, fields...)
+	return _u
+}
+
+// Save executes the query and returns the updated CustomType entity.
+func (_u *CustomTypeUpdateOne) Save(ctx context.Context) (*CustomType, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *CustomTypeUpdateOne) SaveX(ctx context.Context) *CustomType {
+	node, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (_u *CustomTypeUpdateOne) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *CustomTypeUpdateOne) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *CustomTypeUpdateOne) sqlSave(ctx context.Context) (_node *CustomType, err error) {
+	_spec := sqlgraph.NewUpdateSpec(customtype.Table, customtype.Columns, sqlgraph.NewFieldSpec(customtype.FieldID, field.TypeInt))
+	id, ok := _u.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "id", err: errors.New(`entv2: missing "CustomType.id" for update`)}
+	}
+	_spec.Node.ID.Value = id
+	if fields := _u.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, customtype.FieldID)
+		for _, f := range fields {
+			if !customtype.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+			}
+			if f != customtype.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Custom(); ok {
+		_spec.SetField(customtype.FieldCustom, field.TypeString, value)
+	}
+	if _u.mutation.CustomCleared() {
+		_spec.ClearField(customtype.FieldCustom, field.TypeString)
+	}
+	if value, ok := _u.mutation.Tz0(); ok {
+		_spec.SetField(customtype.FieldTz0, field.TypeTime, value)
+	}
+	if _u.mutation.Tz0Cleared() {
+		_spec.ClearField(customtype.FieldTz0, field.TypeTime)
+	}
+	if value, ok := _u.mutation.Tz3(); ok {
+		_spec.SetField(customtype.FieldTz3, field.TypeTime, value)
+	}
+	if _u.mutation.Tz3Cleared() {
+		_spec.ClearField(customtype.FieldTz3, field.TypeTime)
+	}
+	_node = &CustomType{config: _u.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{customtype.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}

entc/integration/migrate/entv2/ent.go

@@ -0,0 +1,628 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"reflect"
+	"sync"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/blog"
+	"entgo.io/ent/entc/integration/migrate/entv2/car"
+	"entgo.io/ent/entc/integration/migrate/entv2/conversion"
+	"entgo.io/ent/entc/integration/migrate/entv2/customtype"
+	"entgo.io/ent/entc/integration/migrate/entv2/group"
+	"entgo.io/ent/entc/integration/migrate/entv2/media"
+	"entgo.io/ent/entc/integration/migrate/entv2/pet"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/entc/integration/migrate/entv2/zoo"
+)
+
+// ent aliases to avoid import conflicts in user's code.
+type (
+	Op            = ent.Op
+	Hook          = ent.Hook
+	Value         = ent.Value
+	Query         = ent.Query
+	QueryContext  = ent.QueryContext
+	Querier       = ent.Querier
+	QuerierFunc   = ent.QuerierFunc
+	Interceptor   = ent.Interceptor
+	InterceptFunc = ent.InterceptFunc
+	Traverser     = ent.Traverser
+	TraverseFunc  = ent.TraverseFunc
+	Policy        = ent.Policy
+	Mutator       = ent.Mutator
+	Mutation      = ent.Mutation
+	MutateFunc    = ent.MutateFunc
+)
+
+type clientCtxKey struct{}
+
+// FromContext returns a Client stored inside a context, or nil if there isn't one.
+func FromContext(ctx context.Context) *Client {
+	c, _ := ctx.Value(clientCtxKey{}).(*Client)
+	return c
+}
+
+// NewContext returns a new context with the given Client attached.
+func NewContext(parent context.Context, c *Client) context.Context {
+	return context.WithValue(parent, clientCtxKey{}, c)
+}
+
+type txCtxKey struct{}
+
+// TxFromContext returns a Tx stored inside a context, or nil if there isn't one.
+func TxFromContext(ctx context.Context) *Tx {
+	tx, _ := ctx.Value(txCtxKey{}).(*Tx)
+	return tx
+}
+
+// NewTxContext returns a new context with the given Tx attached.
+func NewTxContext(parent context.Context, tx *Tx) context.Context {
+	return context.WithValue(parent, txCtxKey{}, tx)
+}
+
+// OrderFunc applies an ordering on the sql selector.
+// Deprecated: Use Asc/Desc functions or the package builders instead.
+type OrderFunc func(*sql.Selector)
+
+var (
+	initCheck   sync.Once
+	columnCheck sql.ColumnCheck
+)
+
+// checkColumn checks if the column exists in the given table.
+func checkColumn(t, c string) error {
+	initCheck.Do(func() {
+		columnCheck = sql.NewColumnCheck(map[string]func(string) bool{
+			blog.Table:       blog.ValidColumn,
+			car.Table:        car.ValidColumn,
+			conversion.Table: conversion.ValidColumn,
+			customtype.Table: customtype.ValidColumn,
+			group.Table:      group.ValidColumn,
+			media.Table:      media.ValidColumn,
+			pet.Table:        pet.ValidColumn,
+			user.Table:       user.ValidColumn,
+			zoo.Table:        zoo.ValidColumn,
+		})
+	})
+	return columnCheck(t, c)
+}
+
+// Asc applies the given fields in ASC order.
+func Asc(fields ...string) func(*sql.Selector) {
+	return func(s *sql.Selector) {
+		for _, f := range fields {
+			if err := checkColumn(s.TableName(), f); err != nil {
+				s.AddError(&ValidationError{Name: f, err: fmt.Errorf("entv2: %w", err)})
+			}
+			s.OrderBy(sql.Asc(s.C(f)))
+		}
+	}
+}
+
+// Desc applies the given fields in DESC order.
+func Desc(fields ...string) func(*sql.Selector) {
+	return func(s *sql.Selector) {
+		for _, f := range fields {
+			if err := checkColumn(s.TableName(), f); err != nil {
+				s.AddError(&ValidationError{Name: f, err: fmt.Errorf("entv2: %w", err)})
+			}
+			s.OrderBy(sql.Desc(s.C(f)))
+		}
+	}
+}
+
+// AggregateFunc applies an aggregation step on the group-by traversal/selector.
+type AggregateFunc func(*sql.Selector) string
+
+// As is a pseudo aggregation function for renaming another other functions with custom names. For example:
+//
+//	GroupBy(field1, field2).
+//	Aggregate(entv2.As(entv2.Sum(field1), "sum_field1"), (entv2.As(entv2.Sum(field2), "sum_field2")).
+//	Scan(ctx, &v)
+func As(fn AggregateFunc, end string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		return sql.As(fn(s), end)
+	}
+}
+
+// Count applies the "count" aggregation function on each group.
+func Count() AggregateFunc {
+	return func(s *sql.Selector) string {
+		return sql.Count("*")
+	}
+}
+
+// Max applies the "max" aggregation function on the given field of each group.
+func Max(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		if err := checkColumn(s.TableName(), field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("entv2: %w", err)})
+			return ""
+		}
+		return sql.Max(s.C(field))
+	}
+}
+
+// Mean applies the "mean" aggregation function on the given field of each group.
+func Mean(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		if err := checkColumn(s.TableName(), field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("entv2: %w", err)})
+			return ""
+		}
+		return sql.Avg(s.C(field))
+	}
+}
+
+// Min applies the "min" aggregation function on the given field of each group.
+func Min(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		if err := checkColumn(s.TableName(), field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("entv2: %w", err)})
+			return ""
+		}
+		return sql.Min(s.C(field))
+	}
+}
+
+// Sum applies the "sum" aggregation function on the given field of each group.
+func Sum(field string) AggregateFunc {
+	return func(s *sql.Selector) string {
+		if err := checkColumn(s.TableName(), field); err != nil {
+			s.AddError(&ValidationError{Name: field, err: fmt.Errorf("entv2: %w", err)})
+			return ""
+		}
+		return sql.Sum(s.C(field))
+	}
+}
+
+// ValidationError returns when validating a field or edge fails.
+type ValidationError struct {
+	Name string // Field or edge name.
+	err  error
+}
+
+// Error implements the error interface.
+func (e *ValidationError) Error() string {
+	return e.err.Error()
+}
+
+// Unwrap implements the errors.Wrapper interface.
+func (e *ValidationError) Unwrap() error {
+	return e.err
+}
+
+// IsValidationError returns a boolean indicating whether the error is a validation error.
+func IsValidationError(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *ValidationError
+	return errors.As(err, &e)
+}
+
+// NotFoundError returns when trying to fetch a specific entity and it was not found in the database.
+type NotFoundError struct {
+	label string
+}
+
+// Error implements the error interface.
+func (e *NotFoundError) Error() string {
+	return "entv2: " + e.label + " not found"
+}
+
+// IsNotFound returns a boolean indicating whether the error is a not found error.
+func IsNotFound(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *NotFoundError
+	return errors.As(err, &e)
+}
+
+// MaskNotFound masks not found error.
+func MaskNotFound(err error) error {
+	if IsNotFound(err) {
+		return nil
+	}
+	return err
+}
+
+// NotSingularError returns when trying to fetch a singular entity and more then one was found in the database.
+type NotSingularError struct {
+	label string
+}
+
+// Error implements the error interface.
+func (e *NotSingularError) Error() string {
+	return "entv2: " + e.label + " not singular"
+}
+
+// IsNotSingular returns a boolean indicating whether the error is a not singular error.
+func IsNotSingular(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *NotSingularError
+	return errors.As(err, &e)
+}
+
+// NotLoadedError returns when trying to get a node that was not loaded by the query.
+type NotLoadedError struct {
+	edge string
+}
+
+// Error implements the error interface.
+func (e *NotLoadedError) Error() string {
+	return "entv2: " + e.edge + " edge was not loaded"
+}
+
+// IsNotLoaded returns a boolean indicating whether the error is a not loaded error.
+func IsNotLoaded(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *NotLoadedError
+	return errors.As(err, &e)
+}
+
+// ConstraintError returns when trying to create/update one or more entities and
+// one or more of their constraints failed. For example, violation of edge or
+// field uniqueness.
+type ConstraintError struct {
+	msg  string
+	wrap error
+}
+
+// Error implements the error interface.
+func (e ConstraintError) Error() string {
+	return "entv2: constraint failed: " + e.msg
+}
+
+// Unwrap implements the errors.Wrapper interface.
+func (e *ConstraintError) Unwrap() error {
+	return e.wrap
+}
+
+// IsConstraintError returns a boolean indicating whether the error is a constraint failure.
+func IsConstraintError(err error) bool {
+	if err == nil {
+		return false
+	}
+	var e *ConstraintError
+	return errors.As(err, &e)
+}
+
+// selector embedded by the different Select/GroupBy builders.
+type selector struct {
+	label string
+	flds  *[]string
+	fns   []AggregateFunc
+	scan  func(context.Context, any) error
+}
+
+// ScanX is like Scan, but panics if an error occurs.
+func (s *selector) ScanX(ctx context.Context, v any) {
+	if err := s.scan(ctx, v); err != nil {
+		panic(err)
+	}
+}
+
+// Strings returns list of strings from a selector. It is only allowed when selecting one field.
+func (s *selector) Strings(ctx context.Context) ([]string, error) {
+	if len(*s.flds) > 1 {
+		return nil, errors.New("entv2: Strings is not achievable when selecting more than 1 field")
+	}
+	var v []string
+	if err := s.scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// StringsX is like Strings, but panics if an error occurs.
+func (s *selector) StringsX(ctx context.Context) []string {
+	v, err := s.Strings(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// String returns a single string from a selector. It is only allowed when selecting one field.
+func (s *selector) String(ctx context.Context) (_ string, err error) {
+	var v []string
+	if v, err = s.Strings(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{s.label}
+	default:
+		err = fmt.Errorf("entv2: Strings returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// StringX is like String, but panics if an error occurs.
+func (s *selector) StringX(ctx context.Context) string {
+	v, err := s.String(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Ints returns list of ints from a selector. It is only allowed when selecting one field.
+func (s *selector) Ints(ctx context.Context) ([]int, error) {
+	if len(*s.flds) > 1 {
+		return nil, errors.New("entv2: Ints is not achievable when selecting more than 1 field")
+	}
+	var v []int
+	if err := s.scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// IntsX is like Ints, but panics if an error occurs.
+func (s *selector) IntsX(ctx context.Context) []int {
+	v, err := s.Ints(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Int returns a single int from a selector. It is only allowed when selecting one field.
+func (s *selector) Int(ctx context.Context) (_ int, err error) {
+	var v []int
+	if v, err = s.Ints(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{s.label}
+	default:
+		err = fmt.Errorf("entv2: Ints returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// IntX is like Int, but panics if an error occurs.
+func (s *selector) IntX(ctx context.Context) int {
+	v, err := s.Int(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Float64s returns list of float64s from a selector. It is only allowed when selecting one field.
+func (s *selector) Float64s(ctx context.Context) ([]float64, error) {
+	if len(*s.flds) > 1 {
+		return nil, errors.New("entv2: Float64s is not achievable when selecting more than 1 field")
+	}
+	var v []float64
+	if err := s.scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// Float64sX is like Float64s, but panics if an error occurs.
+func (s *selector) Float64sX(ctx context.Context) []float64 {
+	v, err := s.Float64s(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Float64 returns a single float64 from a selector. It is only allowed when selecting one field.
+func (s *selector) Float64(ctx context.Context) (_ float64, err error) {
+	var v []float64
+	if v, err = s.Float64s(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{s.label}
+	default:
+		err = fmt.Errorf("entv2: Float64s returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// Float64X is like Float64, but panics if an error occurs.
+func (s *selector) Float64X(ctx context.Context) float64 {
+	v, err := s.Float64(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Bools returns list of bools from a selector. It is only allowed when selecting one field.
+func (s *selector) Bools(ctx context.Context) ([]bool, error) {
+	if len(*s.flds) > 1 {
+		return nil, errors.New("entv2: Bools is not achievable when selecting more than 1 field")
+	}
+	var v []bool
+	if err := s.scan(ctx, &v); err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+// BoolsX is like Bools, but panics if an error occurs.
+func (s *selector) BoolsX(ctx context.Context) []bool {
+	v, err := s.Bools(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Bool returns a single bool from a selector. It is only allowed when selecting one field.
+func (s *selector) Bool(ctx context.Context) (_ bool, err error) {
+	var v []bool
+	if v, err = s.Bools(ctx); err != nil {
+		return
+	}
+	switch len(v) {
+	case 1:
+		return v[0], nil
+	case 0:
+		err = &NotFoundError{s.label}
+	default:
+		err = fmt.Errorf("entv2: Bools returned %d results when one was expected", len(v))
+	}
+	return
+}
+
+// BoolX is like Bool, but panics if an error occurs.
+func (s *selector) BoolX(ctx context.Context) bool {
+	v, err := s.Bool(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// withHooks invokes the builder operation with the given hooks, if any.
+func withHooks[V Value, M any, PM interface {
+	*M
+	Mutation
+}](ctx context.Context, exec func(context.Context) (V, error), mutation PM, hooks []Hook) (value V, err error) {
+	if len(hooks) == 0 {
+		return exec(ctx)
+	}
+	var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+		mutationT, ok := any(m).(PM)
+		if !ok {
+			return nil, fmt.Errorf("unexpected mutation type %T", m)
+		}
+		// Set the mutation to the builder.
+		*mutation = *mutationT
+		return exec(ctx)
+	})
+	for i := len(hooks) - 1; i >= 0; i-- {
+		if hooks[i] == nil {
+			return value, fmt.Errorf("ent: uninitialized hook (forgotten import ent/runtime?)")
+		}
+		mut = hooks[i](mut)
+	}
+	v, err := mut.Mutate(ctx, mutation)
+	if err != nil {
+		return value, err
+	}
+	nv, ok := v.(V)
+	if !ok {
+		return value, fmt.Errorf("unexpected node type %T returned from %T", v, mutation)
+	}
+	return nv, nil
+}
+
+// setContextOp returns a new context with the given QueryContext attached (including its op) in case it does not exist.
+func setContextOp(ctx context.Context, qc *QueryContext, op string) context.Context {
+	if ent.QueryFromContext(ctx) == nil {
+		qc.Op = op
+		ctx = ent.NewQueryContext(ctx, qc)
+	}
+	return ctx
+}
+
+func querierAll[V Value, Q interface {
+	sqlAll(context.Context, ...queryHook) (V, error)
+}]() Querier {
+	return QuerierFunc(func(ctx context.Context, q Query) (Value, error) {
+		query, ok := q.(Q)
+		if !ok {
+			return nil, fmt.Errorf("unexpected query type %T", q)
+		}
+		return query.sqlAll(ctx)
+	})
+}
+
+func querierCount[Q interface {
+	sqlCount(context.Context) (int, error)
+}]() Querier {
+	return QuerierFunc(func(ctx context.Context, q Query) (Value, error) {
+		query, ok := q.(Q)
+		if !ok {
+			return nil, fmt.Errorf("unexpected query type %T", q)
+		}
+		return query.sqlCount(ctx)
+	})
+}
+
+func withInterceptors[V Value](ctx context.Context, q Query, qr Querier, inters []Interceptor) (v V, err error) {
+	for i := len(inters) - 1; i >= 0; i-- {
+		qr = inters[i].Intercept(qr)
+	}
+	rv, err := qr.Query(ctx, q)
+	if err != nil {
+		return v, err
+	}
+	vt, ok := rv.(V)
+	if !ok {
+		return v, fmt.Errorf("unexpected type %T returned from %T. expected type: %T", vt, q, v)
+	}
+	return vt, nil
+}
+
+func scanWithInterceptors[Q1 ent.Query, Q2 interface {
+	sqlScan(context.Context, Q1, any) error
+}](ctx context.Context, rootQuery Q1, selectOrGroup Q2, inters []Interceptor, v any) error {
+	rv := reflect.ValueOf(v)
+	var qr Querier = QuerierFunc(func(ctx context.Context, q Query) (Value, error) {
+		query, ok := q.(Q1)
+		if !ok {
+			return nil, fmt.Errorf("unexpected query type %T", q)
+		}
+		if err := selectOrGroup.sqlScan(ctx, query, v); err != nil {
+			return nil, err
+		}
+		if k := rv.Kind(); k == reflect.Pointer && rv.Elem().CanInterface() {
+			return rv.Elem().Interface(), nil
+		}
+		return v, nil
+	})
+	for i := len(inters) - 1; i >= 0; i-- {
+		qr = inters[i].Intercept(qr)
+	}
+	vv, err := qr.Query(ctx, rootQuery)
+	if err != nil {
+		return err
+	}
+	switch rv2 := reflect.ValueOf(vv); {
+	case rv.IsNil(), rv2.IsNil(), rv.Kind() != reflect.Pointer:
+	case rv.Type() == rv2.Type():
+		rv.Elem().Set(rv2.Elem())
+	case rv.Elem().Type() == rv2.Type():
+		rv.Elem().Set(rv2)
+	}
+	return nil
+}
+
+// queryHook describes an internal hook for the different sqlAll methods.
+type queryHook func(context.Context, *sqlgraph.QuerySpec)

entc/integration/migrate/entv2/enttest/enttest.go

@@ -0,0 +1,88 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package enttest
+
+import (
+	"context"
+
+	"entgo.io/ent/entc/integration/migrate/entv2"
+	// required by schema hooks.
+	_ "entgo.io/ent/entc/integration/migrate/entv2/runtime"
+
+	"entgo.io/ent/dialect/sql/schema"
+	"entgo.io/ent/entc/integration/migrate/entv2/migrate"
+)
+
+type (
+	// TestingT is the interface that is shared between
+	// testing.T and testing.B and used by enttest.
+	TestingT interface {
+		FailNow()
+		Error(...any)
+	}
+
+	// Option configures client creation.
+	Option func(*options)
+
+	options struct {
+		opts        []entv2.Option
+		migrateOpts []schema.MigrateOption
+	}
+)
+
+// WithOptions forwards options to client creation.
+func WithOptions(opts ...entv2.Option) Option {
+	return func(o *options) {
+		o.opts = append(o.opts, opts...)
+	}
+}
+
+// WithMigrateOptions forwards options to auto migration.
+func WithMigrateOptions(opts ...schema.MigrateOption) Option {
+	return func(o *options) {
+		o.migrateOpts = append(o.migrateOpts, opts...)
+	}
+}
+
+func newOptions(opts []Option) *options {
+	o := &options{}
+	for _, opt := range opts {
+		opt(o)
+	}
+	return o
+}
+
+// Open calls entv2.Open and auto-run migration.
+func Open(t TestingT, driverName, dataSourceName string, opts ...Option) *entv2.Client {
+	o := newOptions(opts)
+	c, err := entv2.Open(driverName, dataSourceName, o.opts...)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+	migrateSchema(t, c, o)
+	return c
+}
+
+// NewClient calls entv2.NewClient and auto-run migration.
+func NewClient(t TestingT, opts ...Option) *entv2.Client {
+	o := newOptions(opts)
+	c := entv2.NewClient(o.opts...)
+	migrateSchema(t, c, o)
+	return c
+}
+func migrateSchema(t TestingT, c *entv2.Client, o *options) {
+	tables, err := schema.CopyTables(migrate.Tables)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+	if err := migrate.Create(context.Background(), c.Schema, tables, o.migrateOpts...); err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+}

entc/integration/migrate/entv2/generate.go

@@ -0,0 +1,7 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+package entv2
+
+//go:generate go run -mod=mod entgo.io/ent/cmd/ent generate --feature sql/versioned-migration --header "// Copyright 2019-present Facebook Inc. All rights reserved.\n// This source code is licensed under the Apache 2.0 license found\n// in the LICENSE file in the root directory of this source tree.\n\n// Code generated by ent, DO NOT EDIT." ./schema

entc/integration/migrate/entv2/group.go

@@ -0,0 +1,95 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"fmt"
+	"strings"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/group"
+)
+
+// Group is the model entity for the Group schema.
+type Group struct {
+	config
+	// ID of the ent.
+	ID           int `json:"id,omitempty"`
+	selectValues sql.SelectValues
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*Group) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case group.FieldID:
+			values[i] = new(sql.NullInt64)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the Group fields.
+func (_m *Group) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case group.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int(value.Int64)
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the Group.
+// This includes values selected through modifiers, order, etc.
+func (_m *Group) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// Update returns a builder for updating this Group.
+// Note that you need to call Group.Unwrap() before calling this method if this Group
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *Group) Update() *GroupUpdateOne {
+	return NewGroupClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the Group entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *Group) Unwrap() *Group {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("entv2: Group is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *Group) String() string {
+	var builder strings.Builder
+	builder.WriteString("Group(")
+	builder.WriteString(fmt.Sprintf("id=%v", _m.ID))
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// Groups is a parsable slice of Group.
+type Groups []*Group

entc/integration/migrate/entv2/group/group.go

@@ -0,0 +1,43 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package group
+
+import (
+	"entgo.io/ent/dialect/sql"
+)
+
+const (
+	// Label holds the string label denoting the group type in the database.
+	Label = "group"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// Table holds the table name of the group in the database.
+	Table = "groups"
+)
+
+// Columns holds all SQL columns for group fields.
+var Columns = []string{
+	FieldID,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+// OrderOption defines the ordering options for the Group queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}

entc/integration/migrate/entv2/group/mutation.go

@@ -0,0 +1,192 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package group
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// Mutation represents an operation that mutates the Group nodes in the graph.
+type Mutation struct {
+	op            ent.Op
+	typ           string
+	clearedFields map[string]struct{}
+	predicates    []predicate.Group
+}
+
+// NewMutation creates a new Mutation for the Group entity.
+func NewMutation(op ent.Op) *Mutation {
+	return &Mutation{
+		op:            op,
+		typ:           "Group",
+		clearedFields: make(map[string]struct{}),
+	}
+}
+
+// Predicates returns the list of predicates set on the mutation.
+func (m *Mutation) Predicates() []predicate.Group {
+	return m.predicates
+}
+
+// Where appends a list predicates to the Mutation builder.
+func (m *Mutation) Where(ps ...predicate.Group) {
+	m.predicates = append(m.predicates, ps...)
+}
+
+// WhereP appends storage-level predicates to the Mutation builder. Using this method,
+// users can use type-assertion to append predicates that do not depend on any generated package.
+func (m *Mutation) WhereP(ps ...func(*sql.Selector)) {
+	p := make([]predicate.Group, len(ps))
+	for i := range ps {
+		p[i] = ps[i]
+	}
+	m.Where(p...)
+}
+
+// Op returns the operation name.
+func (m *Mutation) Op() ent.Op {
+	return m.op
+}
+
+// SetOp allows setting the mutation operation.
+func (m *Mutation) SetOp(op ent.Op) {
+	m.op = op
+}
+
+// Type returns the node type of this mutation (Group).
+func (m *Mutation) Type() string {
+	return m.typ
+}
+
+// Fields returns all fields that were changed during this mutation. Note that in
+// order to get all numeric fields that were incremented/decremented, call
+// AddedFields().
+func (m *Mutation) Fields() []string {
+	fields := make([]string, 0, 0)
+	return fields
+}
+
+// Field returns the value of a field with the given name. The second boolean
+// return value indicates that this field was not set, or was not defined in the
+// schema.
+func (m *Mutation) Field(name string) (ent.Value, bool) {
+	return nil, false
+}
+
+// OldField returns the old value of the field from the database. An error is
+// returned if the mutation operation is not UpdateOne, or the query to the
+// database failed.
+func (m *Mutation) OldField(ctx context.Context, name string) (ent.Value, error) {
+	return nil, fmt.Errorf("unknown Group field %s", name)
+}
+
+// SetField sets the value of a field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) SetField(name string, value ent.Value) error {
+	switch name {
+	}
+	return fmt.Errorf("unknown Group field %s", name)
+}
+
+// AddedFields returns all numeric fields that were incremented/decremented during
+// this mutation.
+func (m *Mutation) AddedFields() []string {
+	return nil
+}
+
+// AddedField returns the numeric value that was incremented/decremented on a field
+// with the given name. The second boolean return value indicates that this field
+// was not set, or was not defined in the schema.
+func (m *Mutation) AddedField(name string) (ent.Value, bool) {
+	return nil, false
+}
+
+// AddField adds the value to the field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) AddField(name string, value ent.Value) error {
+	return fmt.Errorf("unknown Group numeric field %s", name)
+}
+
+// ClearedFields returns all nullable fields that were cleared during this
+// mutation.
+func (m *Mutation) ClearedFields() []string {
+	return nil
+}
+
+// FieldCleared returns a boolean indicating if a field with the given name was
+// cleared in this mutation.
+func (m *Mutation) FieldCleared(name string) bool {
+	_, ok := m.clearedFields[name]
+	return ok
+}
+
+// ClearField clears the value of the field with the given name. It returns an
+// error if the field is not defined in the schema.
+func (m *Mutation) ClearField(name string) error {
+	return fmt.Errorf("unknown Group nullable field %s", name)
+}
+
+// ResetField resets all changes in the mutation for the field with the given name.
+// It returns an error if the field is not defined in the schema.
+func (m *Mutation) ResetField(name string) error {
+	return fmt.Errorf("unknown Group field %s", name)
+}
+
+// AddedEdges returns all edge names that were set/added in this mutation.
+func (m *Mutation) AddedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// AddedIDs returns all IDs (to other nodes) that were added for the given edge
+// name in this mutation.
+func (m *Mutation) AddedIDs(name string) []ent.Value {
+	return nil
+}
+
+// RemovedEdges returns all edge names that were removed in this mutation.
+func (m *Mutation) RemovedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
+// the given name in this mutation.
+func (m *Mutation) RemovedIDs(name string) []ent.Value {
+	return nil
+}
+
+// ClearedEdges returns all edge names that were cleared in this mutation.
+func (m *Mutation) ClearedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// EdgeCleared returns a boolean which indicates if the edge with the given name
+// was cleared in this mutation.
+func (m *Mutation) EdgeCleared(name string) bool {
+	return false
+}
+
+// ClearEdge clears the value of the edge with the given name. It returns an error
+// if that edge is not defined in the schema.
+func (m *Mutation) ClearEdge(name string) error {
+	return fmt.Errorf("unknown Group unique edge %s", name)
+}
+
+// ResetEdge resets all changes to the edge with the given name in this mutation.
+// It returns an error if the edge is not defined in the schema.
+func (m *Mutation) ResetEdge(name string) error {
+	return fmt.Errorf("unknown Group edge %s", name)
+}

entc/integration/migrate/entv2/group/where.go

@@ -0,0 +1,72 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package group
+
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int) predicate.Group {
+	return predicate.Group(sql.FieldEQ(FieldID, id))
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int) predicate.Group {
+	return predicate.Group(sql.FieldEQ(FieldID, id))
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int) predicate.Group {
+	return predicate.Group(sql.FieldNEQ(FieldID, id))
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int) predicate.Group {
+	return predicate.Group(sql.FieldIn(FieldID, ids...))
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int) predicate.Group {
+	return predicate.Group(sql.FieldNotIn(FieldID, ids...))
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int) predicate.Group {
+	return predicate.Group(sql.FieldGT(FieldID, id))
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int) predicate.Group {
+	return predicate.Group(sql.FieldGTE(FieldID, id))
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int) predicate.Group {
+	return predicate.Group(sql.FieldLT(FieldID, id))
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int) predicate.Group {
+	return predicate.Group(sql.FieldLTE(FieldID, id))
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.Group) predicate.Group {
+	return predicate.Group(sql.AndPredicates(predicates...))
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.Group) predicate.Group {
+	return predicate.Group(sql.OrPredicates(predicates...))
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.Group) predicate.Group {
+	return predicate.Group(sql.NotPredicates(p))
+}

entc/integration/migrate/entv2/group_create.go

@@ -0,0 +1,173 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/group"
+	"entgo.io/ent/schema/field"
+)
+
+// GroupCreate is the builder for creating a Group entity.
+type GroupCreate struct {
+	config
+	mutation *GroupMutation
+	hooks    []Hook
+}
+
+// Mutation returns the GroupMutation object of the builder.
+func (_c *GroupCreate) Mutation() *GroupMutation {
+	return _c.mutation
+}
+
+// Save creates the Group in the database.
+func (_c *GroupCreate) Save(ctx context.Context) (*Group, error) {
+	return withHooks(ctx, _c.sqlSave, _c.mutation, _c.hooks)
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (_c *GroupCreate) SaveX(ctx context.Context) *Group {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *GroupCreate) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *GroupCreate) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_c *GroupCreate) check() error {
+	return nil
+}
+
+func (_c *GroupCreate) sqlSave(ctx context.Context) (*Group, error) {
+	if err := _c.check(); err != nil {
+		return nil, err
+	}
+	_node, _spec := _c.createSpec()
+	if err := sqlgraph.CreateNode(ctx, _c.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	id := _spec.ID.Value.(int64)
+	_node.ID = int(id)
+	_c.mutation.id = &_node.ID
+	_c.mutation.done = true
+	return _node, nil
+}
+
+func (_c *GroupCreate) createSpec() (*Group, *sqlgraph.CreateSpec) {
+	var (
+		_node = &Group{config: _c.config}
+		_spec = sqlgraph.NewCreateSpec(group.Table, sqlgraph.NewFieldSpec(group.FieldID, field.TypeInt))
+	)
+	return _node, _spec
+}
+
+// GroupCreateBulk is the builder for creating many Group entities in bulk.
+type GroupCreateBulk struct {
+	config
+	err      error
+	builders []*GroupCreate
+}
+
+// Save creates the Group entities in the database.
+func (_c *GroupCreateBulk) Save(ctx context.Context) ([]*Group, error) {
+	if _c.err != nil {
+		return nil, _c.err
+	}
+	specs := make([]*sqlgraph.CreateSpec, len(_c.builders))
+	nodes := make([]*Group, len(_c.builders))
+	mutators := make([]Mutator, len(_c.builders))
+	for i := range _c.builders {
+		func(i int, root context.Context) {
+			builder := _c.builders[i]
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*GroupMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				var err error
+				nodes[i], specs[i] = builder.createSpec()
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, _c.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, _c.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{msg: err.Error(), wrap: err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				if specs[i].ID.Value != nil {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int(id)
+				}
+				mutation.done = true
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, _c.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_c *GroupCreateBulk) SaveX(ctx context.Context) []*Group {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *GroupCreateBulk) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *GroupCreateBulk) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/group_delete.go

@@ -0,0 +1,92 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/group"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// GroupDelete is the builder for deleting a Group entity.
+type GroupDelete struct {
+	config
+	hooks    []Hook
+	mutation *GroupMutation
+}
+
+// Where appends a list predicates to the GroupDelete builder.
+func (_d *GroupDelete) Where(ps ...predicate.Group) *GroupDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *GroupDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *GroupDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *GroupDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(group.Table, sqlgraph.NewFieldSpec(group.FieldID, field.TypeInt))
+	if ps := _d.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// GroupDeleteOne is the builder for deleting a single Group entity.
+type GroupDeleteOne struct {
+	_d *GroupDelete
+}
+
+// Where appends a list predicates to the GroupDelete builder.
+func (_d *GroupDeleteOne) Where(ps ...predicate.Group) *GroupDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *GroupDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{group.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *GroupDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/group_query.go

@@ -0,0 +1,509 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/group"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// GroupQuery is the builder for querying Group entities.
+type GroupQuery struct {
+	config
+	ctx        *QueryContext
+	order      []group.OrderOption
+	inters     []Interceptor
+	predicates []predicate.Group
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the GroupQuery builder.
+func (_q *GroupQuery) Where(ps ...predicate.Group) *GroupQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *GroupQuery) Limit(limit int) *GroupQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *GroupQuery) Offset(offset int) *GroupQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *GroupQuery) Unique(unique bool) *GroupQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *GroupQuery) Order(o ...group.OrderOption) *GroupQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// First returns the first Group entity from the query.
+// Returns a *NotFoundError when no Group was found.
+func (_q *GroupQuery) First(ctx context.Context) (*Group, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{group.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *GroupQuery) FirstX(ctx context.Context) *Group {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first Group ID from the query.
+// Returns a *NotFoundError when no Group ID was found.
+func (_q *GroupQuery) FirstID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{group.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *GroupQuery) FirstIDX(ctx context.Context) int {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single Group entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one Group entity is found.
+// Returns a *NotFoundError when no Group entities are found.
+func (_q *GroupQuery) Only(ctx context.Context) (*Group, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{group.Label}
+	default:
+		return nil, &NotSingularError{group.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *GroupQuery) OnlyX(ctx context.Context) *Group {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only Group ID in the query.
+// Returns a *NotSingularError when more than one Group ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *GroupQuery) OnlyID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{group.Label}
+	default:
+		err = &NotSingularError{group.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *GroupQuery) OnlyIDX(ctx context.Context) int {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of Groups.
+func (_q *GroupQuery) All(ctx context.Context) ([]*Group, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*Group, *GroupQuery]()
+	return withInterceptors[[]*Group](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *GroupQuery) AllX(ctx context.Context) []*Group {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of Group IDs.
+func (_q *GroupQuery) IDs(ctx context.Context) (ids []int, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(group.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *GroupQuery) IDsX(ctx context.Context) []int {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *GroupQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*GroupQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *GroupQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *GroupQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("entv2: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *GroupQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the GroupQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *GroupQuery) Clone() *GroupQuery {
+	if _q == nil {
+		return nil
+	}
+	return &GroupQuery{
+		config:     _q.config,
+		ctx:        _q.ctx.Clone(),
+		order:      append([]group.OrderOption{}, _q.order...),
+		inters:     append([]Interceptor{}, _q.inters...),
+		predicates: append([]predicate.Group{}, _q.predicates...),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+func (_q *GroupQuery) GroupBy(field string, fields ...string) *GroupGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &GroupGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = group.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+func (_q *GroupQuery) Select(fields ...string) *GroupSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &GroupSelect{GroupQuery: _q}
+	sbuild.label = group.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a GroupSelect configured with the given aggregations.
+func (_q *GroupQuery) Aggregate(fns ...AggregateFunc) *GroupSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *GroupQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("entv2: uninitialized interceptor (forgotten import entv2/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !group.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *GroupQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Group, error) {
+	var (
+		nodes = []*Group{}
+		_spec = _q.querySpec()
+	)
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*Group).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &Group{config: _q.config}
+		nodes = append(nodes, node)
+		return node.assignValues(columns, values)
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	return nodes, nil
+}
+
+func (_q *GroupQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *GroupQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(group.Table, group.Columns, sqlgraph.NewFieldSpec(group.FieldID, field.TypeInt))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, group.FieldID)
+		for i := range fields {
+			if fields[i] != group.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *GroupQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(group.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = group.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// GroupGroupBy is the group-by builder for Group entities.
+type GroupGroupBy struct {
+	selector
+	build *GroupQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *GroupGroupBy) Aggregate(fns ...AggregateFunc) *GroupGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *GroupGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*GroupQuery, *GroupGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *GroupGroupBy) sqlScan(ctx context.Context, root *GroupQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// GroupSelect is the builder for selecting fields of Group entities.
+type GroupSelect struct {
+	*GroupQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *GroupSelect) Aggregate(fns ...AggregateFunc) *GroupSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *GroupSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*GroupQuery, *GroupSelect](ctx, _s.GroupQuery, _s, _s.inters, v)
+}
+
+func (_s *GroupSelect) sqlScan(ctx context.Context, root *GroupQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

entc/integration/migrate/entv2/group_update.go

@@ -0,0 +1,179 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/group"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// GroupUpdate is the builder for updating Group entities.
+type GroupUpdate struct {
+	config
+	hooks    []Hook
+	mutation *GroupMutation
+}
+
+// Where appends a list predicates to the GroupUpdate builder.
+func (_u *GroupUpdate) Where(ps ...predicate.Group) *GroupUpdate {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Mutation returns the GroupMutation object of the builder.
+func (_u *GroupUpdate) Mutation() *GroupMutation {
+	return _u.mutation
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (_u *GroupUpdate) Save(ctx context.Context) (int, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *GroupUpdate) SaveX(ctx context.Context) int {
+	affected, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (_u *GroupUpdate) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *GroupUpdate) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *GroupUpdate) sqlSave(ctx context.Context) (_node int, err error) {
+	_spec := sqlgraph.NewUpdateSpec(group.Table, group.Columns, sqlgraph.NewFieldSpec(group.FieldID, field.TypeInt))
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{group.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return 0, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}
+
+// GroupUpdateOne is the builder for updating a single Group entity.
+type GroupUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *GroupMutation
+}
+
+// Mutation returns the GroupMutation object of the builder.
+func (_u *GroupUpdateOne) Mutation() *GroupMutation {
+	return _u.mutation
+}
+
+// Where appends a list predicates to the GroupUpdate builder.
+func (_u *GroupUpdateOne) Where(ps ...predicate.Group) *GroupUpdateOne {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (_u *GroupUpdateOne) Select(field string, fields ...string) *GroupUpdateOne {
+	_u.fields = append([]string{field}, fields...)
+	return _u
+}
+
+// Save executes the query and returns the updated Group entity.
+func (_u *GroupUpdateOne) Save(ctx context.Context) (*Group, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *GroupUpdateOne) SaveX(ctx context.Context) *Group {
+	node, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (_u *GroupUpdateOne) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *GroupUpdateOne) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *GroupUpdateOne) sqlSave(ctx context.Context) (_node *Group, err error) {
+	_spec := sqlgraph.NewUpdateSpec(group.Table, group.Columns, sqlgraph.NewFieldSpec(group.FieldID, field.TypeInt))
+	id, ok := _u.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "id", err: errors.New(`entv2: missing "Group.id" for update`)}
+	}
+	_spec.Node.ID.Value = id
+	if fields := _u.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, group.FieldID)
+		for _, f := range fields {
+			if !group.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+			}
+			if f != group.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	_node = &Group{config: _u.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{group.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}

entc/integration/migrate/entv2/hook/hook.go

@@ -0,0 +1,299 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package hook
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent/entc/integration/migrate/entv2"
+)
+
+// The BlogFunc type is an adapter to allow the use of ordinary
+// function as Blog mutator.
+type BlogFunc func(context.Context, *entv2.BlogMutation) (entv2.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f BlogFunc) Mutate(ctx context.Context, m entv2.Mutation) (entv2.Value, error) {
+	if mv, ok := m.(*entv2.BlogMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *entv2.BlogMutation", m)
+}
+
+// The CarFunc type is an adapter to allow the use of ordinary
+// function as Car mutator.
+type CarFunc func(context.Context, *entv2.CarMutation) (entv2.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f CarFunc) Mutate(ctx context.Context, m entv2.Mutation) (entv2.Value, error) {
+	if mv, ok := m.(*entv2.CarMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *entv2.CarMutation", m)
+}
+
+// The ConversionFunc type is an adapter to allow the use of ordinary
+// function as Conversion mutator.
+type ConversionFunc func(context.Context, *entv2.ConversionMutation) (entv2.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f ConversionFunc) Mutate(ctx context.Context, m entv2.Mutation) (entv2.Value, error) {
+	if mv, ok := m.(*entv2.ConversionMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *entv2.ConversionMutation", m)
+}
+
+// The CustomTypeFunc type is an adapter to allow the use of ordinary
+// function as CustomType mutator.
+type CustomTypeFunc func(context.Context, *entv2.CustomTypeMutation) (entv2.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f CustomTypeFunc) Mutate(ctx context.Context, m entv2.Mutation) (entv2.Value, error) {
+	if mv, ok := m.(*entv2.CustomTypeMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *entv2.CustomTypeMutation", m)
+}
+
+// The GroupFunc type is an adapter to allow the use of ordinary
+// function as Group mutator.
+type GroupFunc func(context.Context, *entv2.GroupMutation) (entv2.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f GroupFunc) Mutate(ctx context.Context, m entv2.Mutation) (entv2.Value, error) {
+	if mv, ok := m.(*entv2.GroupMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *entv2.GroupMutation", m)
+}
+
+// The MediaFunc type is an adapter to allow the use of ordinary
+// function as Media mutator.
+type MediaFunc func(context.Context, *entv2.MediaMutation) (entv2.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f MediaFunc) Mutate(ctx context.Context, m entv2.Mutation) (entv2.Value, error) {
+	if mv, ok := m.(*entv2.MediaMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *entv2.MediaMutation", m)
+}
+
+// The PetFunc type is an adapter to allow the use of ordinary
+// function as Pet mutator.
+type PetFunc func(context.Context, *entv2.PetMutation) (entv2.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f PetFunc) Mutate(ctx context.Context, m entv2.Mutation) (entv2.Value, error) {
+	if mv, ok := m.(*entv2.PetMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *entv2.PetMutation", m)
+}
+
+// The UserFunc type is an adapter to allow the use of ordinary
+// function as User mutator.
+type UserFunc func(context.Context, *entv2.UserMutation) (entv2.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f UserFunc) Mutate(ctx context.Context, m entv2.Mutation) (entv2.Value, error) {
+	if mv, ok := m.(*entv2.UserMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *entv2.UserMutation", m)
+}
+
+// The ZooFunc type is an adapter to allow the use of ordinary
+// function as Zoo mutator.
+type ZooFunc func(context.Context, *entv2.ZooMutation) (entv2.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f ZooFunc) Mutate(ctx context.Context, m entv2.Mutation) (entv2.Value, error) {
+	if mv, ok := m.(*entv2.ZooMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *entv2.ZooMutation", m)
+}
+
+// Condition is a hook condition function.
+type Condition func(context.Context, entv2.Mutation) bool
+
+// And groups conditions with the AND operator.
+func And(first, second Condition, rest ...Condition) Condition {
+	return func(ctx context.Context, m entv2.Mutation) bool {
+		if !first(ctx, m) || !second(ctx, m) {
+			return false
+		}
+		for _, cond := range rest {
+			if !cond(ctx, m) {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// Or groups conditions with the OR operator.
+func Or(first, second Condition, rest ...Condition) Condition {
+	return func(ctx context.Context, m entv2.Mutation) bool {
+		if first(ctx, m) || second(ctx, m) {
+			return true
+		}
+		for _, cond := range rest {
+			if cond(ctx, m) {
+				return true
+			}
+		}
+		return false
+	}
+}
+
+// Not negates a given condition.
+func Not(cond Condition) Condition {
+	return func(ctx context.Context, m entv2.Mutation) bool {
+		return !cond(ctx, m)
+	}
+}
+
+// HasOp is a condition testing mutation operation.
+func HasOp(op entv2.Op) Condition {
+	return func(_ context.Context, m entv2.Mutation) bool {
+		return m.Op().Is(op)
+	}
+}
+
+// HasAddedFields is a condition validating `.AddedField` on fields.
+func HasAddedFields(field string, fields ...string) Condition {
+	return func(_ context.Context, m entv2.Mutation) bool {
+		if _, exists := m.AddedField(field); !exists {
+			return false
+		}
+		for _, field := range fields {
+			if _, exists := m.AddedField(field); !exists {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// HasClearedFields is a condition validating `.FieldCleared` on fields.
+func HasClearedFields(field string, fields ...string) Condition {
+	return func(_ context.Context, m entv2.Mutation) bool {
+		if exists := m.FieldCleared(field); !exists {
+			return false
+		}
+		for _, field := range fields {
+			if exists := m.FieldCleared(field); !exists {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// HasFields is a condition validating `.Field` on fields.
+func HasFields(field string, fields ...string) Condition {
+	return func(_ context.Context, m entv2.Mutation) bool {
+		if _, exists := m.Field(field); !exists {
+			return false
+		}
+		for _, field := range fields {
+			if _, exists := m.Field(field); !exists {
+				return false
+			}
+		}
+		return true
+	}
+}
+
+// If executes the given hook under condition.
+//
+//	hook.If(ComputeAverage, And(HasFields(...), HasAddedFields(...)))
+func If(hk entv2.Hook, cond Condition) entv2.Hook {
+	return func(next entv2.Mutator) entv2.Mutator {
+		return entv2.MutateFunc(func(ctx context.Context, m entv2.Mutation) (entv2.Value, error) {
+			if cond(ctx, m) {
+				return hk(next).Mutate(ctx, m)
+			}
+			return next.Mutate(ctx, m)
+		})
+	}
+}
+
+// On executes the given hook only for the given operation.
+//
+//	hook.On(Log, entv2.Delete|entv2.Create)
+func On(hk entv2.Hook, op entv2.Op) entv2.Hook {
+	return If(hk, HasOp(op))
+}
+
+// Unless skips the given hook only for the given operation.
+//
+//	hook.Unless(Log, entv2.Update|entv2.UpdateOne)
+func Unless(hk entv2.Hook, op entv2.Op) entv2.Hook {
+	return If(hk, Not(HasOp(op)))
+}
+
+// FixedError is a hook returning a fixed error.
+func FixedError(err error) entv2.Hook {
+	return func(entv2.Mutator) entv2.Mutator {
+		return entv2.MutateFunc(func(context.Context, entv2.Mutation) (entv2.Value, error) {
+			return nil, err
+		})
+	}
+}
+
+// Reject returns a hook that rejects all operations that match op.
+//
+//	func (T) Hooks() []entv2.Hook {
+//		return []entv2.Hook{
+//			Reject(entv2.Delete|entv2.Update),
+//		}
+//	}
+func Reject(op entv2.Op) entv2.Hook {
+	hk := FixedError(fmt.Errorf("%s operation is not allowed", op))
+	return On(hk, op)
+}
+
+// Chain acts as a list of hooks and is effectively immutable.
+// Once created, it will always hold the same set of hooks in the same order.
+type Chain struct {
+	hooks []entv2.Hook
+}
+
+// NewChain creates a new chain of hooks.
+func NewChain(hooks ...entv2.Hook) Chain {
+	return Chain{append([]entv2.Hook(nil), hooks...)}
+}
+
+// Hook chains the list of hooks and returns the final hook.
+func (c Chain) Hook() entv2.Hook {
+	return func(mutator entv2.Mutator) entv2.Mutator {
+		for i := len(c.hooks) - 1; i >= 0; i-- {
+			mutator = c.hooks[i](mutator)
+		}
+		return mutator
+	}
+}
+
+// Append extends a chain, adding the specified hook
+// as the last ones in the mutation flow.
+func (c Chain) Append(hooks ...entv2.Hook) Chain {
+	newHooks := make([]entv2.Hook, 0, len(c.hooks)+len(hooks))
+	newHooks = append(newHooks, c.hooks...)
+	newHooks = append(newHooks, hooks...)
+	return Chain{newHooks}
+}
+
+// Extend extends a chain, adding the specified chain
+// as the last ones in the mutation flow.
+func (c Chain) Extend(chain Chain) Chain {
+	return c.Append(chain.hooks...)
+}

entc/integration/migrate/entv2/media.go

@@ -0,0 +1,129 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"fmt"
+	"strings"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/media"
+)
+
+// Comment that appears in both the schema and the generated code
+type Media struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int `json:"id,omitempty"`
+	// Source holds the value of the "source" field.
+	Source string `json:"source,omitempty"`
+	// source_ui text
+	SourceURI string `json:"source_uri,omitempty"`
+	// media text
+	Text         string `json:"text,omitempty"`
+	selectValues sql.SelectValues
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*Media) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case media.FieldID:
+			values[i] = new(sql.NullInt64)
+		case media.FieldSource, media.FieldSourceURI, media.FieldText:
+			values[i] = new(sql.NullString)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the Media fields.
+func (_m *Media) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case media.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int(value.Int64)
+		case media.FieldSource:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field source", values[i])
+			} else if value.Valid {
+				_m.Source = value.String
+			}
+		case media.FieldSourceURI:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field source_uri", values[i])
+			} else if value.Valid {
+				_m.SourceURI = value.String
+			}
+		case media.FieldText:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field text", values[i])
+			} else if value.Valid {
+				_m.Text = value.String
+			}
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the Media.
+// This includes values selected through modifiers, order, etc.
+func (_m *Media) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// Update returns a builder for updating this Media.
+// Note that you need to call Media.Unwrap() before calling this method if this Media
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *Media) Update() *MediaUpdateOne {
+	return NewMediaClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the Media entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *Media) Unwrap() *Media {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("entv2: Media is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *Media) String() string {
+	var builder strings.Builder
+	builder.WriteString("Media(")
+	builder.WriteString(fmt.Sprintf("id=%v, ", _m.ID))
+	builder.WriteString("source=")
+	builder.WriteString(_m.Source)
+	builder.WriteString(", ")
+	builder.WriteString("source_uri=")
+	builder.WriteString(_m.SourceURI)
+	builder.WriteString(", ")
+	builder.WriteString("text=")
+	builder.WriteString(_m.Text)
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// MediaSlice is a parsable slice of Media.
+type MediaSlice []*Media

entc/integration/migrate/entv2/media/media.go

@@ -0,0 +1,67 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package media
+
+import (
+	"entgo.io/ent/dialect/sql"
+)
+
+const (
+	// Label holds the string label denoting the media type in the database.
+	Label = "media"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldSource holds the string denoting the source field in the database.
+	FieldSource = "source"
+	// FieldSourceURI holds the string denoting the source_uri field in the database.
+	FieldSourceURI = "source_uri"
+	// FieldText holds the string denoting the text field in the database.
+	FieldText = "text"
+	// Table holds the table name of the media in the database.
+	Table = "media"
+)
+
+// Columns holds all SQL columns for media fields.
+var Columns = []string{
+	FieldID,
+	FieldSource,
+	FieldSourceURI,
+	FieldText,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+// OrderOption defines the ordering options for the Media queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// BySource orders the results by the source field.
+func BySource(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldSource, opts...).ToFunc()
+}
+
+// BySourceURI orders the results by the source_uri field.
+func BySourceURI(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldSourceURI, opts...).ToFunc()
+}
+
+// ByText orders the results by the text field.
+func ByText(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldText, opts...).ToFunc()
+}

entc/integration/migrate/entv2/media/mutation.go

@@ -0,0 +1,363 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package media
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// Mutation represents an operation that mutates the Media nodes in the graph.
+type Mutation struct {
+	op            ent.Op
+	typ           string
+	source        *string
+	source_uri    *string
+	text          *string
+	clearedFields map[string]struct{}
+	predicates    []predicate.Media
+}
+
+// NewMutation creates a new Mutation for the Media entity.
+func NewMutation(op ent.Op) *Mutation {
+	return &Mutation{
+		op:            op,
+		typ:           "Media",
+		clearedFields: make(map[string]struct{}),
+	}
+}
+
+// Predicates returns the list of predicates set on the mutation.
+func (m *Mutation) Predicates() []predicate.Media {
+	return m.predicates
+}
+
+// SetSource sets the "source" field.
+func (m *Mutation) SetSource(s string) {
+	m.source = &s
+}
+
+// Source returns the value of the "source" field in the mutation.
+func (m *Mutation) Source() (r string, exists bool) {
+	v := m.source
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearSource clears the value of the "source" field.
+func (m *Mutation) ClearSource() {
+	m.source = nil
+	m.clearedFields[FieldSource] = struct{}{}
+}
+
+// SourceCleared returns if the "source" field was cleared in this mutation.
+func (m *Mutation) SourceCleared() bool {
+	_, ok := m.clearedFields[FieldSource]
+	return ok
+}
+
+// ResetSource resets all changes to the "source" field.
+func (m *Mutation) ResetSource() {
+	m.source = nil
+	delete(m.clearedFields, FieldSource)
+}
+
+// SetSourceURI sets the "source_uri" field.
+func (m *Mutation) SetSourceURI(s string) {
+	m.source_uri = &s
+}
+
+// SourceURI returns the value of the "source_uri" field in the mutation.
+func (m *Mutation) SourceURI() (r string, exists bool) {
+	v := m.source_uri
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearSourceURI clears the value of the "source_uri" field.
+func (m *Mutation) ClearSourceURI() {
+	m.source_uri = nil
+	m.clearedFields[FieldSourceURI] = struct{}{}
+}
+
+// SourceURICleared returns if the "source_uri" field was cleared in this mutation.
+func (m *Mutation) SourceURICleared() bool {
+	_, ok := m.clearedFields[FieldSourceURI]
+	return ok
+}
+
+// ResetSourceURI resets all changes to the "source_uri" field.
+func (m *Mutation) ResetSourceURI() {
+	m.source_uri = nil
+	delete(m.clearedFields, FieldSourceURI)
+}
+
+// SetText sets the "text" field.
+func (m *Mutation) SetText(s string) {
+	m.text = &s
+}
+
+// Text returns the value of the "text" field in the mutation.
+func (m *Mutation) Text() (r string, exists bool) {
+	v := m.text
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearText clears the value of the "text" field.
+func (m *Mutation) ClearText() {
+	m.text = nil
+	m.clearedFields[FieldText] = struct{}{}
+}
+
+// TextCleared returns if the "text" field was cleared in this mutation.
+func (m *Mutation) TextCleared() bool {
+	_, ok := m.clearedFields[FieldText]
+	return ok
+}
+
+// ResetText resets all changes to the "text" field.
+func (m *Mutation) ResetText() {
+	m.text = nil
+	delete(m.clearedFields, FieldText)
+}
+
+// Where appends a list predicates to the Mutation builder.
+func (m *Mutation) Where(ps ...predicate.Media) {
+	m.predicates = append(m.predicates, ps...)
+}
+
+// WhereP appends storage-level predicates to the Mutation builder. Using this method,
+// users can use type-assertion to append predicates that do not depend on any generated package.
+func (m *Mutation) WhereP(ps ...func(*sql.Selector)) {
+	p := make([]predicate.Media, len(ps))
+	for i := range ps {
+		p[i] = ps[i]
+	}
+	m.Where(p...)
+}
+
+// Op returns the operation name.
+func (m *Mutation) Op() ent.Op {
+	return m.op
+}
+
+// SetOp allows setting the mutation operation.
+func (m *Mutation) SetOp(op ent.Op) {
+	m.op = op
+}
+
+// Type returns the node type of this mutation (Media).
+func (m *Mutation) Type() string {
+	return m.typ
+}
+
+// Fields returns all fields that were changed during this mutation. Note that in
+// order to get all numeric fields that were incremented/decremented, call
+// AddedFields().
+func (m *Mutation) Fields() []string {
+	fields := make([]string, 0, 3)
+	if m.source != nil {
+		fields = append(fields, FieldSource)
+	}
+	if m.source_uri != nil {
+		fields = append(fields, FieldSourceURI)
+	}
+	if m.text != nil {
+		fields = append(fields, FieldText)
+	}
+	return fields
+}
+
+// Field returns the value of a field with the given name. The second boolean
+// return value indicates that this field was not set, or was not defined in the
+// schema.
+func (m *Mutation) Field(name string) (ent.Value, bool) {
+	switch name {
+	case FieldSource:
+		return m.Source()
+	case FieldSourceURI:
+		return m.SourceURI()
+	case FieldText:
+		return m.Text()
+	}
+	return nil, false
+}
+
+// OldField returns the old value of the field from the database. An error is
+// returned if the mutation operation is not UpdateOne, or the query to the
+// database failed.
+func (m *Mutation) OldField(ctx context.Context, name string) (ent.Value, error) {
+	return nil, fmt.Errorf("unknown Media field %s", name)
+}
+
+// SetField sets the value of a field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) SetField(name string, value ent.Value) error {
+	switch name {
+	case FieldSource:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetSource(v)
+		return nil
+	case FieldSourceURI:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetSourceURI(v)
+		return nil
+	case FieldText:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetText(v)
+		return nil
+	}
+	return fmt.Errorf("unknown Media field %s", name)
+}
+
+// AddedFields returns all numeric fields that were incremented/decremented during
+// this mutation.
+func (m *Mutation) AddedFields() []string {
+	return nil
+}
+
+// AddedField returns the numeric value that was incremented/decremented on a field
+// with the given name. The second boolean return value indicates that this field
+// was not set, or was not defined in the schema.
+func (m *Mutation) AddedField(name string) (ent.Value, bool) {
+	return nil, false
+}
+
+// AddField adds the value to the field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) AddField(name string, value ent.Value) error {
+	switch name {
+	}
+	return fmt.Errorf("unknown Media numeric field %s", name)
+}
+
+// ClearedFields returns all nullable fields that were cleared during this
+// mutation.
+func (m *Mutation) ClearedFields() []string {
+	var fields []string
+	if m.FieldCleared(FieldSource) {
+		fields = append(fields, FieldSource)
+	}
+	if m.FieldCleared(FieldSourceURI) {
+		fields = append(fields, FieldSourceURI)
+	}
+	if m.FieldCleared(FieldText) {
+		fields = append(fields, FieldText)
+	}
+	return fields
+}
+
+// FieldCleared returns a boolean indicating if a field with the given name was
+// cleared in this mutation.
+func (m *Mutation) FieldCleared(name string) bool {
+	_, ok := m.clearedFields[name]
+	return ok
+}
+
+// ClearField clears the value of the field with the given name. It returns an
+// error if the field is not defined in the schema.
+func (m *Mutation) ClearField(name string) error {
+	switch name {
+	case FieldSource:
+		m.ClearSource()
+		return nil
+	case FieldSourceURI:
+		m.ClearSourceURI()
+		return nil
+	case FieldText:
+		m.ClearText()
+		return nil
+	}
+	return fmt.Errorf("unknown Media nullable field %s", name)
+}
+
+// ResetField resets all changes in the mutation for the field with the given name.
+// It returns an error if the field is not defined in the schema.
+func (m *Mutation) ResetField(name string) error {
+	switch name {
+	case FieldSource:
+		m.ResetSource()
+		return nil
+	case FieldSourceURI:
+		m.ResetSourceURI()
+		return nil
+	case FieldText:
+		m.ResetText()
+		return nil
+	}
+	return fmt.Errorf("unknown Media field %s", name)
+}
+
+// AddedEdges returns all edge names that were set/added in this mutation.
+func (m *Mutation) AddedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// AddedIDs returns all IDs (to other nodes) that were added for the given edge
+// name in this mutation.
+func (m *Mutation) AddedIDs(name string) []ent.Value {
+	return nil
+}
+
+// RemovedEdges returns all edge names that were removed in this mutation.
+func (m *Mutation) RemovedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
+// the given name in this mutation.
+func (m *Mutation) RemovedIDs(name string) []ent.Value {
+	return nil
+}
+
+// ClearedEdges returns all edge names that were cleared in this mutation.
+func (m *Mutation) ClearedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// EdgeCleared returns a boolean which indicates if the edge with the given name
+// was cleared in this mutation.
+func (m *Mutation) EdgeCleared(name string) bool {
+	return false
+}
+
+// ClearEdge clears the value of the edge with the given name. It returns an error
+// if that edge is not defined in the schema.
+func (m *Mutation) ClearEdge(name string) error {
+	return fmt.Errorf("unknown Media unique edge %s", name)
+}
+
+// ResetEdge resets all changes to the edge with the given name in this mutation.
+// It returns an error if the edge is not defined in the schema.
+func (m *Mutation) ResetEdge(name string) error {
+	return fmt.Errorf("unknown Media edge %s", name)
+}

entc/integration/migrate/entv2/media/where.go

@@ -0,0 +1,312 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package media
+
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int) predicate.Media {
+	return predicate.Media(sql.FieldEQ(FieldID, id))
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int) predicate.Media {
+	return predicate.Media(sql.FieldEQ(FieldID, id))
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int) predicate.Media {
+	return predicate.Media(sql.FieldNEQ(FieldID, id))
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int) predicate.Media {
+	return predicate.Media(sql.FieldIn(FieldID, ids...))
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int) predicate.Media {
+	return predicate.Media(sql.FieldNotIn(FieldID, ids...))
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int) predicate.Media {
+	return predicate.Media(sql.FieldGT(FieldID, id))
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int) predicate.Media {
+	return predicate.Media(sql.FieldGTE(FieldID, id))
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int) predicate.Media {
+	return predicate.Media(sql.FieldLT(FieldID, id))
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int) predicate.Media {
+	return predicate.Media(sql.FieldLTE(FieldID, id))
+}
+
+// Source applies equality check predicate on the "source" field. It's identical to SourceEQ.
+func Source(v string) predicate.Media {
+	return predicate.Media(sql.FieldEQ(FieldSource, v))
+}
+
+// SourceURI applies equality check predicate on the "source_uri" field. It's identical to SourceURIEQ.
+func SourceURI(v string) predicate.Media {
+	return predicate.Media(sql.FieldEQ(FieldSourceURI, v))
+}
+
+// Text applies equality check predicate on the "text" field. It's identical to TextEQ.
+func Text(v string) predicate.Media {
+	return predicate.Media(sql.FieldEQ(FieldText, v))
+}
+
+// SourceEQ applies the EQ predicate on the "source" field.
+func SourceEQ(v string) predicate.Media {
+	return predicate.Media(sql.FieldEQ(FieldSource, v))
+}
+
+// SourceNEQ applies the NEQ predicate on the "source" field.
+func SourceNEQ(v string) predicate.Media {
+	return predicate.Media(sql.FieldNEQ(FieldSource, v))
+}
+
+// SourceIn applies the In predicate on the "source" field.
+func SourceIn(vs ...string) predicate.Media {
+	return predicate.Media(sql.FieldIn(FieldSource, vs...))
+}
+
+// SourceNotIn applies the NotIn predicate on the "source" field.
+func SourceNotIn(vs ...string) predicate.Media {
+	return predicate.Media(sql.FieldNotIn(FieldSource, vs...))
+}
+
+// SourceGT applies the GT predicate on the "source" field.
+func SourceGT(v string) predicate.Media {
+	return predicate.Media(sql.FieldGT(FieldSource, v))
+}
+
+// SourceGTE applies the GTE predicate on the "source" field.
+func SourceGTE(v string) predicate.Media {
+	return predicate.Media(sql.FieldGTE(FieldSource, v))
+}
+
+// SourceLT applies the LT predicate on the "source" field.
+func SourceLT(v string) predicate.Media {
+	return predicate.Media(sql.FieldLT(FieldSource, v))
+}
+
+// SourceLTE applies the LTE predicate on the "source" field.
+func SourceLTE(v string) predicate.Media {
+	return predicate.Media(sql.FieldLTE(FieldSource, v))
+}
+
+// SourceContains applies the Contains predicate on the "source" field.
+func SourceContains(v string) predicate.Media {
+	return predicate.Media(sql.FieldContains(FieldSource, v))
+}
+
+// SourceHasPrefix applies the HasPrefix predicate on the "source" field.
+func SourceHasPrefix(v string) predicate.Media {
+	return predicate.Media(sql.FieldHasPrefix(FieldSource, v))
+}
+
+// SourceHasSuffix applies the HasSuffix predicate on the "source" field.
+func SourceHasSuffix(v string) predicate.Media {
+	return predicate.Media(sql.FieldHasSuffix(FieldSource, v))
+}
+
+// SourceIsNil applies the IsNil predicate on the "source" field.
+func SourceIsNil() predicate.Media {
+	return predicate.Media(sql.FieldIsNull(FieldSource))
+}
+
+// SourceNotNil applies the NotNil predicate on the "source" field.
+func SourceNotNil() predicate.Media {
+	return predicate.Media(sql.FieldNotNull(FieldSource))
+}
+
+// SourceEqualFold applies the EqualFold predicate on the "source" field.
+func SourceEqualFold(v string) predicate.Media {
+	return predicate.Media(sql.FieldEqualFold(FieldSource, v))
+}
+
+// SourceContainsFold applies the ContainsFold predicate on the "source" field.
+func SourceContainsFold(v string) predicate.Media {
+	return predicate.Media(sql.FieldContainsFold(FieldSource, v))
+}
+
+// SourceURIEQ applies the EQ predicate on the "source_uri" field.
+func SourceURIEQ(v string) predicate.Media {
+	return predicate.Media(sql.FieldEQ(FieldSourceURI, v))
+}
+
+// SourceURINEQ applies the NEQ predicate on the "source_uri" field.
+func SourceURINEQ(v string) predicate.Media {
+	return predicate.Media(sql.FieldNEQ(FieldSourceURI, v))
+}
+
+// SourceURIIn applies the In predicate on the "source_uri" field.
+func SourceURIIn(vs ...string) predicate.Media {
+	return predicate.Media(sql.FieldIn(FieldSourceURI, vs...))
+}
+
+// SourceURINotIn applies the NotIn predicate on the "source_uri" field.
+func SourceURINotIn(vs ...string) predicate.Media {
+	return predicate.Media(sql.FieldNotIn(FieldSourceURI, vs...))
+}
+
+// SourceURIGT applies the GT predicate on the "source_uri" field.
+func SourceURIGT(v string) predicate.Media {
+	return predicate.Media(sql.FieldGT(FieldSourceURI, v))
+}
+
+// SourceURIGTE applies the GTE predicate on the "source_uri" field.
+func SourceURIGTE(v string) predicate.Media {
+	return predicate.Media(sql.FieldGTE(FieldSourceURI, v))
+}
+
+// SourceURILT applies the LT predicate on the "source_uri" field.
+func SourceURILT(v string) predicate.Media {
+	return predicate.Media(sql.FieldLT(FieldSourceURI, v))
+}
+
+// SourceURILTE applies the LTE predicate on the "source_uri" field.
+func SourceURILTE(v string) predicate.Media {
+	return predicate.Media(sql.FieldLTE(FieldSourceURI, v))
+}
+
+// SourceURIContains applies the Contains predicate on the "source_uri" field.
+func SourceURIContains(v string) predicate.Media {
+	return predicate.Media(sql.FieldContains(FieldSourceURI, v))
+}
+
+// SourceURIHasPrefix applies the HasPrefix predicate on the "source_uri" field.
+func SourceURIHasPrefix(v string) predicate.Media {
+	return predicate.Media(sql.FieldHasPrefix(FieldSourceURI, v))
+}
+
+// SourceURIHasSuffix applies the HasSuffix predicate on the "source_uri" field.
+func SourceURIHasSuffix(v string) predicate.Media {
+	return predicate.Media(sql.FieldHasSuffix(FieldSourceURI, v))
+}
+
+// SourceURIIsNil applies the IsNil predicate on the "source_uri" field.
+func SourceURIIsNil() predicate.Media {
+	return predicate.Media(sql.FieldIsNull(FieldSourceURI))
+}
+
+// SourceURINotNil applies the NotNil predicate on the "source_uri" field.
+func SourceURINotNil() predicate.Media {
+	return predicate.Media(sql.FieldNotNull(FieldSourceURI))
+}
+
+// SourceURIEqualFold applies the EqualFold predicate on the "source_uri" field.
+func SourceURIEqualFold(v string) predicate.Media {
+	return predicate.Media(sql.FieldEqualFold(FieldSourceURI, v))
+}
+
+// SourceURIContainsFold applies the ContainsFold predicate on the "source_uri" field.
+func SourceURIContainsFold(v string) predicate.Media {
+	return predicate.Media(sql.FieldContainsFold(FieldSourceURI, v))
+}
+
+// TextEQ applies the EQ predicate on the "text" field.
+func TextEQ(v string) predicate.Media {
+	return predicate.Media(sql.FieldEQ(FieldText, v))
+}
+
+// TextNEQ applies the NEQ predicate on the "text" field.
+func TextNEQ(v string) predicate.Media {
+	return predicate.Media(sql.FieldNEQ(FieldText, v))
+}
+
+// TextIn applies the In predicate on the "text" field.
+func TextIn(vs ...string) predicate.Media {
+	return predicate.Media(sql.FieldIn(FieldText, vs...))
+}
+
+// TextNotIn applies the NotIn predicate on the "text" field.
+func TextNotIn(vs ...string) predicate.Media {
+	return predicate.Media(sql.FieldNotIn(FieldText, vs...))
+}
+
+// TextGT applies the GT predicate on the "text" field.
+func TextGT(v string) predicate.Media {
+	return predicate.Media(sql.FieldGT(FieldText, v))
+}
+
+// TextGTE applies the GTE predicate on the "text" field.
+func TextGTE(v string) predicate.Media {
+	return predicate.Media(sql.FieldGTE(FieldText, v))
+}
+
+// TextLT applies the LT predicate on the "text" field.
+func TextLT(v string) predicate.Media {
+	return predicate.Media(sql.FieldLT(FieldText, v))
+}
+
+// TextLTE applies the LTE predicate on the "text" field.
+func TextLTE(v string) predicate.Media {
+	return predicate.Media(sql.FieldLTE(FieldText, v))
+}
+
+// TextContains applies the Contains predicate on the "text" field.
+func TextContains(v string) predicate.Media {
+	return predicate.Media(sql.FieldContains(FieldText, v))
+}
+
+// TextHasPrefix applies the HasPrefix predicate on the "text" field.
+func TextHasPrefix(v string) predicate.Media {
+	return predicate.Media(sql.FieldHasPrefix(FieldText, v))
+}
+
+// TextHasSuffix applies the HasSuffix predicate on the "text" field.
+func TextHasSuffix(v string) predicate.Media {
+	return predicate.Media(sql.FieldHasSuffix(FieldText, v))
+}
+
+// TextIsNil applies the IsNil predicate on the "text" field.
+func TextIsNil() predicate.Media {
+	return predicate.Media(sql.FieldIsNull(FieldText))
+}
+
+// TextNotNil applies the NotNil predicate on the "text" field.
+func TextNotNil() predicate.Media {
+	return predicate.Media(sql.FieldNotNull(FieldText))
+}
+
+// TextEqualFold applies the EqualFold predicate on the "text" field.
+func TextEqualFold(v string) predicate.Media {
+	return predicate.Media(sql.FieldEqualFold(FieldText, v))
+}
+
+// TextContainsFold applies the ContainsFold predicate on the "text" field.
+func TextContainsFold(v string) predicate.Media {
+	return predicate.Media(sql.FieldContainsFold(FieldText, v))
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.Media) predicate.Media {
+	return predicate.Media(sql.AndPredicates(predicates...))
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.Media) predicate.Media {
+	return predicate.Media(sql.OrPredicates(predicates...))
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.Media) predicate.Media {
+	return predicate.Media(sql.NotPredicates(p))
+}

entc/integration/migrate/entv2/media_create.go

@@ -0,0 +1,227 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/media"
+	"entgo.io/ent/schema/field"
+)
+
+// MediaCreate is the builder for creating a Media entity.
+type MediaCreate struct {
+	config
+	mutation *MediaMutation
+	hooks    []Hook
+}
+
+// SetSource sets the "source" field.
+func (_c *MediaCreate) SetSource(v string) *MediaCreate {
+	_c.mutation.SetSource(v)
+	return _c
+}
+
+// SetNillableSource sets the "source" field if the given value is not nil.
+func (_c *MediaCreate) SetNillableSource(v *string) *MediaCreate {
+	if v != nil {
+		_c.SetSource(*v)
+	}
+	return _c
+}
+
+// SetSourceURI sets the "source_uri" field.
+func (_c *MediaCreate) SetSourceURI(v string) *MediaCreate {
+	_c.mutation.SetSourceURI(v)
+	return _c
+}
+
+// SetNillableSourceURI sets the "source_uri" field if the given value is not nil.
+func (_c *MediaCreate) SetNillableSourceURI(v *string) *MediaCreate {
+	if v != nil {
+		_c.SetSourceURI(*v)
+	}
+	return _c
+}
+
+// SetText sets the "text" field.
+func (_c *MediaCreate) SetText(v string) *MediaCreate {
+	_c.mutation.SetText(v)
+	return _c
+}
+
+// SetNillableText sets the "text" field if the given value is not nil.
+func (_c *MediaCreate) SetNillableText(v *string) *MediaCreate {
+	if v != nil {
+		_c.SetText(*v)
+	}
+	return _c
+}
+
+// Mutation returns the MediaMutation object of the builder.
+func (_c *MediaCreate) Mutation() *MediaMutation {
+	return _c.mutation
+}
+
+// Save creates the Media in the database.
+func (_c *MediaCreate) Save(ctx context.Context) (*Media, error) {
+	return withHooks(ctx, _c.sqlSave, _c.mutation, _c.hooks)
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (_c *MediaCreate) SaveX(ctx context.Context) *Media {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *MediaCreate) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *MediaCreate) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_c *MediaCreate) check() error {
+	return nil
+}
+
+func (_c *MediaCreate) sqlSave(ctx context.Context) (*Media, error) {
+	if err := _c.check(); err != nil {
+		return nil, err
+	}
+	_node, _spec := _c.createSpec()
+	if err := sqlgraph.CreateNode(ctx, _c.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	id := _spec.ID.Value.(int64)
+	_node.ID = int(id)
+	_c.mutation.id = &_node.ID
+	_c.mutation.done = true
+	return _node, nil
+}
+
+func (_c *MediaCreate) createSpec() (*Media, *sqlgraph.CreateSpec) {
+	var (
+		_node = &Media{config: _c.config}
+		_spec = sqlgraph.NewCreateSpec(media.Table, sqlgraph.NewFieldSpec(media.FieldID, field.TypeInt))
+	)
+	if value, ok := _c.mutation.Source(); ok {
+		_spec.SetField(media.FieldSource, field.TypeString, value)
+		_node.Source = value
+	}
+	if value, ok := _c.mutation.SourceURI(); ok {
+		_spec.SetField(media.FieldSourceURI, field.TypeString, value)
+		_node.SourceURI = value
+	}
+	if value, ok := _c.mutation.Text(); ok {
+		_spec.SetField(media.FieldText, field.TypeString, value)
+		_node.Text = value
+	}
+	return _node, _spec
+}
+
+// MediaCreateBulk is the builder for creating many Media entities in bulk.
+type MediaCreateBulk struct {
+	config
+	err      error
+	builders []*MediaCreate
+}
+
+// Save creates the Media entities in the database.
+func (_c *MediaCreateBulk) Save(ctx context.Context) ([]*Media, error) {
+	if _c.err != nil {
+		return nil, _c.err
+	}
+	specs := make([]*sqlgraph.CreateSpec, len(_c.builders))
+	nodes := make([]*Media, len(_c.builders))
+	mutators := make([]Mutator, len(_c.builders))
+	for i := range _c.builders {
+		func(i int, root context.Context) {
+			builder := _c.builders[i]
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*MediaMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				var err error
+				nodes[i], specs[i] = builder.createSpec()
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, _c.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, _c.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{msg: err.Error(), wrap: err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				if specs[i].ID.Value != nil {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int(id)
+				}
+				mutation.done = true
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, _c.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_c *MediaCreateBulk) SaveX(ctx context.Context) []*Media {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *MediaCreateBulk) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *MediaCreateBulk) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/media_delete.go

@@ -0,0 +1,92 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/media"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// MediaDelete is the builder for deleting a Media entity.
+type MediaDelete struct {
+	config
+	hooks    []Hook
+	mutation *MediaMutation
+}
+
+// Where appends a list predicates to the MediaDelete builder.
+func (_d *MediaDelete) Where(ps ...predicate.Media) *MediaDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *MediaDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *MediaDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *MediaDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(media.Table, sqlgraph.NewFieldSpec(media.FieldID, field.TypeInt))
+	if ps := _d.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// MediaDeleteOne is the builder for deleting a single Media entity.
+type MediaDeleteOne struct {
+	_d *MediaDelete
+}
+
+// Where appends a list predicates to the MediaDelete builder.
+func (_d *MediaDeleteOne) Where(ps ...predicate.Media) *MediaDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *MediaDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{media.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *MediaDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/media_query.go

@@ -0,0 +1,531 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/media"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// MediaQuery is the builder for querying Media entities.
+type MediaQuery struct {
+	config
+	ctx        *QueryContext
+	order      []media.OrderOption
+	inters     []Interceptor
+	predicates []predicate.Media
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the MediaQuery builder.
+func (_q *MediaQuery) Where(ps ...predicate.Media) *MediaQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *MediaQuery) Limit(limit int) *MediaQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *MediaQuery) Offset(offset int) *MediaQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *MediaQuery) Unique(unique bool) *MediaQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *MediaQuery) Order(o ...media.OrderOption) *MediaQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// First returns the first Media entity from the query.
+// Returns a *NotFoundError when no Media was found.
+func (_q *MediaQuery) First(ctx context.Context) (*Media, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{media.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *MediaQuery) FirstX(ctx context.Context) *Media {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first Media ID from the query.
+// Returns a *NotFoundError when no Media ID was found.
+func (_q *MediaQuery) FirstID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{media.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *MediaQuery) FirstIDX(ctx context.Context) int {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single Media entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one Media entity is found.
+// Returns a *NotFoundError when no Media entities are found.
+func (_q *MediaQuery) Only(ctx context.Context) (*Media, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{media.Label}
+	default:
+		return nil, &NotSingularError{media.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *MediaQuery) OnlyX(ctx context.Context) *Media {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only Media ID in the query.
+// Returns a *NotSingularError when more than one Media ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *MediaQuery) OnlyID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{media.Label}
+	default:
+		err = &NotSingularError{media.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *MediaQuery) OnlyIDX(ctx context.Context) int {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of MediaSlice.
+func (_q *MediaQuery) All(ctx context.Context) ([]*Media, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*Media, *MediaQuery]()
+	return withInterceptors[[]*Media](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *MediaQuery) AllX(ctx context.Context) []*Media {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of Media IDs.
+func (_q *MediaQuery) IDs(ctx context.Context) (ids []int, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(media.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *MediaQuery) IDsX(ctx context.Context) []int {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *MediaQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*MediaQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *MediaQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *MediaQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("entv2: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *MediaQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the MediaQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *MediaQuery) Clone() *MediaQuery {
+	if _q == nil {
+		return nil
+	}
+	return &MediaQuery{
+		config:     _q.config,
+		ctx:        _q.ctx.Clone(),
+		order:      append([]media.OrderOption{}, _q.order...),
+		inters:     append([]Interceptor{}, _q.inters...),
+		predicates: append([]predicate.Media{}, _q.predicates...),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		Source string `json:"source,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.Media.Query().
+//		GroupBy(media.FieldSource).
+//		Aggregate(entv2.Count()).
+//		Scan(ctx, &v)
+func (_q *MediaQuery) GroupBy(field string, fields ...string) *MediaGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &MediaGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = media.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		Source string `json:"source,omitempty"`
+//	}
+//
+//	client.Media.Query().
+//		Select(media.FieldSource).
+//		Scan(ctx, &v)
+func (_q *MediaQuery) Select(fields ...string) *MediaSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &MediaSelect{MediaQuery: _q}
+	sbuild.label = media.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a MediaSelect configured with the given aggregations.
+func (_q *MediaQuery) Aggregate(fns ...AggregateFunc) *MediaSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *MediaQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("entv2: uninitialized interceptor (forgotten import entv2/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !media.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *MediaQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Media, error) {
+	var (
+		nodes = []*Media{}
+		_spec = _q.querySpec()
+	)
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*Media).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &Media{config: _q.config}
+		nodes = append(nodes, node)
+		return node.assignValues(columns, values)
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	return nodes, nil
+}
+
+func (_q *MediaQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *MediaQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(media.Table, media.Columns, sqlgraph.NewFieldSpec(media.FieldID, field.TypeInt))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, media.FieldID)
+		for i := range fields {
+			if fields[i] != media.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *MediaQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(media.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = media.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// MediaGroupBy is the group-by builder for Media entities.
+type MediaGroupBy struct {
+	selector
+	build *MediaQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *MediaGroupBy) Aggregate(fns ...AggregateFunc) *MediaGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *MediaGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*MediaQuery, *MediaGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *MediaGroupBy) sqlScan(ctx context.Context, root *MediaQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// MediaSelect is the builder for selecting fields of Media entities.
+type MediaSelect struct {
+	*MediaQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *MediaSelect) Aggregate(fns ...AggregateFunc) *MediaSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *MediaSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*MediaQuery, *MediaSelect](ctx, _s.MediaQuery, _s, _s.inters, v)
+}
+
+func (_s *MediaSelect) sqlScan(ctx context.Context, root *MediaQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

entc/integration/migrate/entv2/media_update.go

@@ -0,0 +1,335 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/media"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// MediaUpdate is the builder for updating Media entities.
+type MediaUpdate struct {
+	config
+	hooks    []Hook
+	mutation *MediaMutation
+}
+
+// Where appends a list predicates to the MediaUpdate builder.
+func (_u *MediaUpdate) Where(ps ...predicate.Media) *MediaUpdate {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// SetSource sets the "source" field.
+func (_u *MediaUpdate) SetSource(v string) *MediaUpdate {
+	_u.mutation.SetSource(v)
+	return _u
+}
+
+// SetNillableSource sets the "source" field if the given value is not nil.
+func (_u *MediaUpdate) SetNillableSource(v *string) *MediaUpdate {
+	if v != nil {
+		_u.SetSource(*v)
+	}
+	return _u
+}
+
+// ClearSource clears the value of the "source" field.
+func (_u *MediaUpdate) ClearSource() *MediaUpdate {
+	_u.mutation.ClearSource()
+	return _u
+}
+
+// SetSourceURI sets the "source_uri" field.
+func (_u *MediaUpdate) SetSourceURI(v string) *MediaUpdate {
+	_u.mutation.SetSourceURI(v)
+	return _u
+}
+
+// SetNillableSourceURI sets the "source_uri" field if the given value is not nil.
+func (_u *MediaUpdate) SetNillableSourceURI(v *string) *MediaUpdate {
+	if v != nil {
+		_u.SetSourceURI(*v)
+	}
+	return _u
+}
+
+// ClearSourceURI clears the value of the "source_uri" field.
+func (_u *MediaUpdate) ClearSourceURI() *MediaUpdate {
+	_u.mutation.ClearSourceURI()
+	return _u
+}
+
+// SetText sets the "text" field.
+func (_u *MediaUpdate) SetText(v string) *MediaUpdate {
+	_u.mutation.SetText(v)
+	return _u
+}
+
+// SetNillableText sets the "text" field if the given value is not nil.
+func (_u *MediaUpdate) SetNillableText(v *string) *MediaUpdate {
+	if v != nil {
+		_u.SetText(*v)
+	}
+	return _u
+}
+
+// ClearText clears the value of the "text" field.
+func (_u *MediaUpdate) ClearText() *MediaUpdate {
+	_u.mutation.ClearText()
+	return _u
+}
+
+// Mutation returns the MediaMutation object of the builder.
+func (_u *MediaUpdate) Mutation() *MediaMutation {
+	return _u.mutation
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (_u *MediaUpdate) Save(ctx context.Context) (int, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *MediaUpdate) SaveX(ctx context.Context) int {
+	affected, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (_u *MediaUpdate) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *MediaUpdate) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *MediaUpdate) sqlSave(ctx context.Context) (_node int, err error) {
+	_spec := sqlgraph.NewUpdateSpec(media.Table, media.Columns, sqlgraph.NewFieldSpec(media.FieldID, field.TypeInt))
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Source(); ok {
+		_spec.SetField(media.FieldSource, field.TypeString, value)
+	}
+	if _u.mutation.SourceCleared() {
+		_spec.ClearField(media.FieldSource, field.TypeString)
+	}
+	if value, ok := _u.mutation.SourceURI(); ok {
+		_spec.SetField(media.FieldSourceURI, field.TypeString, value)
+	}
+	if _u.mutation.SourceURICleared() {
+		_spec.ClearField(media.FieldSourceURI, field.TypeString)
+	}
+	if value, ok := _u.mutation.Text(); ok {
+		_spec.SetField(media.FieldText, field.TypeString, value)
+	}
+	if _u.mutation.TextCleared() {
+		_spec.ClearField(media.FieldText, field.TypeString)
+	}
+	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{media.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return 0, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}
+
+// MediaUpdateOne is the builder for updating a single Media entity.
+type MediaUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *MediaMutation
+}
+
+// SetSource sets the "source" field.
+func (_u *MediaUpdateOne) SetSource(v string) *MediaUpdateOne {
+	_u.mutation.SetSource(v)
+	return _u
+}
+
+// SetNillableSource sets the "source" field if the given value is not nil.
+func (_u *MediaUpdateOne) SetNillableSource(v *string) *MediaUpdateOne {
+	if v != nil {
+		_u.SetSource(*v)
+	}
+	return _u
+}
+
+// ClearSource clears the value of the "source" field.
+func (_u *MediaUpdateOne) ClearSource() *MediaUpdateOne {
+	_u.mutation.ClearSource()
+	return _u
+}
+
+// SetSourceURI sets the "source_uri" field.
+func (_u *MediaUpdateOne) SetSourceURI(v string) *MediaUpdateOne {
+	_u.mutation.SetSourceURI(v)
+	return _u
+}
+
+// SetNillableSourceURI sets the "source_uri" field if the given value is not nil.
+func (_u *MediaUpdateOne) SetNillableSourceURI(v *string) *MediaUpdateOne {
+	if v != nil {
+		_u.SetSourceURI(*v)
+	}
+	return _u
+}
+
+// ClearSourceURI clears the value of the "source_uri" field.
+func (_u *MediaUpdateOne) ClearSourceURI() *MediaUpdateOne {
+	_u.mutation.ClearSourceURI()
+	return _u
+}
+
+// SetText sets the "text" field.
+func (_u *MediaUpdateOne) SetText(v string) *MediaUpdateOne {
+	_u.mutation.SetText(v)
+	return _u
+}
+
+// SetNillableText sets the "text" field if the given value is not nil.
+func (_u *MediaUpdateOne) SetNillableText(v *string) *MediaUpdateOne {
+	if v != nil {
+		_u.SetText(*v)
+	}
+	return _u
+}
+
+// ClearText clears the value of the "text" field.
+func (_u *MediaUpdateOne) ClearText() *MediaUpdateOne {
+	_u.mutation.ClearText()
+	return _u
+}
+
+// Mutation returns the MediaMutation object of the builder.
+func (_u *MediaUpdateOne) Mutation() *MediaMutation {
+	return _u.mutation
+}
+
+// Where appends a list predicates to the MediaUpdate builder.
+func (_u *MediaUpdateOne) Where(ps ...predicate.Media) *MediaUpdateOne {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (_u *MediaUpdateOne) Select(field string, fields ...string) *MediaUpdateOne {
+	_u.fields = append([]string{field}, fields...)
+	return _u
+}
+
+// Save executes the query and returns the updated Media entity.
+func (_u *MediaUpdateOne) Save(ctx context.Context) (*Media, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *MediaUpdateOne) SaveX(ctx context.Context) *Media {
+	node, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (_u *MediaUpdateOne) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *MediaUpdateOne) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *MediaUpdateOne) sqlSave(ctx context.Context) (_node *Media, err error) {
+	_spec := sqlgraph.NewUpdateSpec(media.Table, media.Columns, sqlgraph.NewFieldSpec(media.FieldID, field.TypeInt))
+	id, ok := _u.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "id", err: errors.New(`entv2: missing "Media.id" for update`)}
+	}
+	_spec.Node.ID.Value = id
+	if fields := _u.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, media.FieldID)
+		for _, f := range fields {
+			if !media.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+			}
+			if f != media.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Source(); ok {
+		_spec.SetField(media.FieldSource, field.TypeString, value)
+	}
+	if _u.mutation.SourceCleared() {
+		_spec.ClearField(media.FieldSource, field.TypeString)
+	}
+	if value, ok := _u.mutation.SourceURI(); ok {
+		_spec.SetField(media.FieldSourceURI, field.TypeString, value)
+	}
+	if _u.mutation.SourceURICleared() {
+		_spec.ClearField(media.FieldSourceURI, field.TypeString)
+	}
+	if value, ok := _u.mutation.Text(); ok {
+		_spec.SetField(media.FieldText, field.TypeString, value)
+	}
+	if _u.mutation.TextCleared() {
+		_spec.ClearField(media.FieldText, field.TypeString)
+	}
+	_node = &Media{config: _u.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{media.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}

entc/integration/migrate/entv2/migrate/migrate.go

@@ -0,0 +1,100 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package migrate
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql/schema"
+)
+
+var (
+	// WithGlobalUniqueID sets the universal ids options to the migration.
+	// If this option is enabled, ent migration will allocate a 1<<32 range
+	// for the ids of each entity (table).
+	// Note that this option cannot be applied on tables that already exist.
+	WithGlobalUniqueID = schema.WithGlobalUniqueID
+	// WithDropColumn sets the drop column option to the migration.
+	// If this option is enabled, ent migration will drop old columns
+	// that were used for both fields and edges. This defaults to false.
+	WithDropColumn = schema.WithDropColumn
+	// WithDropIndex sets the drop index option to the migration.
+	// If this option is enabled, ent migration will drop old indexes
+	// that were defined in the schema. This defaults to false.
+	// Note that unique constraints are defined using `UNIQUE INDEX`,
+	// and therefore, it's recommended to enable this option to get more
+	// flexibility in the schema changes.
+	WithDropIndex = schema.WithDropIndex
+	// WithForeignKeys enables creating foreign-key in schema DDL. This defaults to true.
+	WithForeignKeys = schema.WithForeignKeys
+)
+
+// Schema is the API for creating, migrating and dropping a schema.
+type Schema struct {
+	drv dialect.Driver
+}
+
+// NewSchema creates a new schema client.
+func NewSchema(drv dialect.Driver) *Schema { return &Schema{drv: drv} }
+
+// Create creates all schema resources.
+func (s *Schema) Create(ctx context.Context, opts ...schema.MigrateOption) error {
+	return Create(ctx, s, Tables, opts...)
+}
+
+// Create creates all table resources using the given schema driver.
+func Create(ctx context.Context, s *Schema, tables []*schema.Table, opts ...schema.MigrateOption) error {
+	migrate, err := schema.NewMigrate(s.drv, opts...)
+	if err != nil {
+		return fmt.Errorf("ent/migrate: %w", err)
+	}
+	return migrate.Create(ctx, tables...)
+}
+
+// Diff compares the state read from a database connection or migration directory with
+// the state defined by the Ent schema. Changes will be written to new migration files.
+func Diff(ctx context.Context, url string, opts ...schema.MigrateOption) error {
+	return NamedDiff(ctx, url, "changes", opts...)
+}
+
+// NamedDiff compares the state read from a database connection or migration directory with
+// the state defined by the Ent schema. Changes will be written to new named migration files.
+func NamedDiff(ctx context.Context, url, name string, opts ...schema.MigrateOption) error {
+	return schema.Diff(ctx, url, name, Tables, opts...)
+}
+
+// Diff creates a migration file containing the statements to resolve the diff
+// between the Ent schema and the connected database.
+func (s *Schema) Diff(ctx context.Context, opts ...schema.MigrateOption) error {
+	migrate, err := schema.NewMigrate(s.drv, opts...)
+	if err != nil {
+		return fmt.Errorf("ent/migrate: %w", err)
+	}
+	return migrate.Diff(ctx, Tables...)
+}
+
+// NamedDiff creates a named migration file containing the statements to resolve the diff
+// between the Ent schema and the connected database.
+func (s *Schema) NamedDiff(ctx context.Context, name string, opts ...schema.MigrateOption) error {
+	migrate, err := schema.NewMigrate(s.drv, opts...)
+	if err != nil {
+		return fmt.Errorf("ent/migrate: %w", err)
+	}
+	return migrate.NamedDiff(ctx, name, Tables...)
+}
+
+// WriteTo writes the schema changes to w instead of running them against the database.
+//
+//	if err := client.Schema.WriteTo(context.Background(), os.Stdout); err != nil {
+//		log.Fatal(err)
+//	}
+func (s *Schema) WriteTo(ctx context.Context, w io.Writer, opts ...schema.MigrateOption) error {
+	return Create(ctx, &Schema{drv: &schema.WriteDriver{Writer: w, Driver: s.drv}}, Tables, opts...)
+}

entc/integration/migrate/entv2/migrate/schema.go

@@ -0,0 +1,309 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package migrate
+
+import (
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/dialect/sql/schema"
+	"entgo.io/ent/schema/field"
+)
+
+var (
+	// BlogsColumns holds the columns for the "blogs" table.
+	BlogsColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt, Increment: true, SchemaType: map[string]string{"postgres": "serial"}},
+		{Name: "oid", Type: field.TypeInt, SchemaType: map[string]string{"postgres": "serial"}},
+	}
+	// BlogsTable holds the schema information for the "blogs" table.
+	BlogsTable = &schema.Table{
+		Name:       "blogs",
+		Columns:    BlogsColumns,
+		PrimaryKey: []*schema.Column{BlogsColumns[0]},
+	}
+	// CarColumns holds the columns for the "Car" table.
+	CarColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt, Increment: true},
+		{Name: "name", Type: field.TypeString, Unique: true, Nullable: true},
+		{Name: "user_car", Type: field.TypeInt},
+	}
+	// CarTable holds the schema information for the "Car" table.
+	CarTable = &schema.Table{
+		Name:       "Car",
+		Columns:    CarColumns,
+		PrimaryKey: []*schema.Column{CarColumns[0]},
+		ForeignKeys: []*schema.ForeignKey{
+			{
+				Symbol:     "Car_users_car",
+				Columns:    []*schema.Column{CarColumns[2]},
+				RefColumns: []*schema.Column{UsersColumns[0]},
+				OnDelete:   schema.NoAction,
+			},
+		},
+	}
+	// ConversionsColumns holds the columns for the "conversions" table.
+	ConversionsColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt, Increment: true},
+		{Name: "name", Type: field.TypeString, Nullable: true},
+		{Name: "int8_to_string", Type: field.TypeString, Nullable: true, Size: 6},
+		{Name: "uint8_to_string", Type: field.TypeString, Nullable: true, Size: 6},
+		{Name: "int16_to_string", Type: field.TypeString, Nullable: true, Size: 6},
+		{Name: "uint16_to_string", Type: field.TypeString, Nullable: true, Size: 6},
+		{Name: "int32_to_string", Type: field.TypeString, Nullable: true, Size: 12},
+		{Name: "uint32_to_string", Type: field.TypeString, Nullable: true, Size: 12},
+		{Name: "int64_to_string", Type: field.TypeString, Nullable: true, Size: 21},
+		{Name: "uint64_to_string", Type: field.TypeString, Nullable: true, Size: 21},
+	}
+	// ConversionsTable holds the schema information for the "conversions" table.
+	ConversionsTable = &schema.Table{
+		Name:       "conversions",
+		Columns:    ConversionsColumns,
+		PrimaryKey: []*schema.Column{ConversionsColumns[0]},
+	}
+	// CustomTypesColumns holds the columns for the "custom_types" table.
+	CustomTypesColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt, Increment: true},
+		{Name: "custom", Type: field.TypeString, Nullable: true, SchemaType: map[string]string{"postgres": "customtype"}},
+		{Name: "tz0", Type: field.TypeTime, Nullable: true, SchemaType: map[string]string{"mysql": "timestamp(0)", "postgres": "timestamptz(0)"}},
+		{Name: "tz3", Type: field.TypeTime, Nullable: true, SchemaType: map[string]string{"mysql": "timestamp(3)", "postgres": "timestamptz(3)"}},
+	}
+	// CustomTypesTable holds the schema information for the "custom_types" table.
+	CustomTypesTable = &schema.Table{
+		Name:       "custom_types",
+		Columns:    CustomTypesColumns,
+		PrimaryKey: []*schema.Column{CustomTypesColumns[0]},
+	}
+	// GroupsColumns holds the columns for the "groups" table.
+	GroupsColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt, Increment: true},
+	}
+	// GroupsTable holds the schema information for the "groups" table.
+	GroupsTable = &schema.Table{
+		Name:       "groups",
+		Columns:    GroupsColumns,
+		PrimaryKey: []*schema.Column{GroupsColumns[0]},
+	}
+	// MediaColumns holds the columns for the "media" table.
+	MediaColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt, Increment: true},
+		{Name: "source", Type: field.TypeString, Nullable: true},
+		{Name: "source_uri", Type: field.TypeString, Nullable: true},
+		{Name: "text", Type: field.TypeString, Nullable: true, Size: 2147483647, Comment: "media text"},
+	}
+	// MediaTable holds the schema information for the "media" table.
+	MediaTable = &schema.Table{
+		Name:       "media",
+		Comment:    "Comment that appears in both the schema and the generated code",
+		Columns:    MediaColumns,
+		PrimaryKey: []*schema.Column{MediaColumns[0]},
+		Indexes: []*schema.Index{
+			{
+				Name:    "media_source_source_uri",
+				Unique:  true,
+				Columns: []*schema.Column{MediaColumns[1], MediaColumns[2]},
+				Annotation: &entsql.IndexAnnotation{
+					PrefixColumns: map[string]uint{
+						MediaColumns[1].Name: 100,
+					},
+				},
+			},
+			{
+				Name:    "media_text",
+				Unique:  false,
+				Columns: []*schema.Column{MediaColumns[3]},
+				Annotation: &entsql.IndexAnnotation{
+					Prefix: 100,
+				},
+			},
+		},
+	}
+	// PetsColumns holds the columns for the "pets" table.
+	PetsColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt, Increment: true},
+		{Name: "name", Type: field.TypeString, Unique: true, Nullable: true},
+		{Name: "owner_id", Type: field.TypeInt, Unique: true, Nullable: true},
+	}
+	// PetsTable holds the schema information for the "pets" table.
+	PetsTable = &schema.Table{
+		Name:       "pets",
+		Columns:    PetsColumns,
+		PrimaryKey: []*schema.Column{PetsColumns[0]},
+		ForeignKeys: []*schema.ForeignKey{
+			{
+				Symbol:     "user_pet_id",
+				Columns:    []*schema.Column{PetsColumns[2]},
+				RefColumns: []*schema.Column{UsersColumns[0]},
+				OnDelete:   schema.SetNull,
+			},
+		},
+	}
+	// UsersColumns holds the columns for the "users" table.
+	UsersColumns = []*schema.Column{
+		{Name: "oid", Type: field.TypeInt, Increment: true},
+		{Name: "mixed_string", Type: field.TypeString, Default: "default"},
+		{Name: "mixed_enum", Type: field.TypeEnum, Enums: []string{"on", "off"}, Default: "on"},
+		{Name: "active", Type: field.TypeBool, Default: true},
+		{Name: "age", Type: field.TypeInt},
+		{Name: "name", Type: field.TypeString, Size: 2147483647},
+		{Name: "description", Type: field.TypeString, Nullable: true, Size: 2147483647},
+		{Name: "nickname", Type: field.TypeString, Size: 255},
+		{Name: "phone", Type: field.TypeString, Default: "unknown"},
+		{Name: "buffer", Type: field.TypeBytes, Nullable: true},
+		{Name: "title", Type: field.TypeString, Default: "SWE"},
+		{Name: "renamed", Type: field.TypeString, Nullable: true},
+		{Name: "new_token", Type: field.TypeString},
+		{Name: "blob", Type: field.TypeBytes, Nullable: true, Size: 1000},
+		{Name: "state", Type: field.TypeEnum, Nullable: true, Enums: []string{"logged_in", "logged_out", "online"}, Default: "logged_in"},
+		{Name: "status", Type: field.TypeEnum, Nullable: true, Enums: []string{"done", "pending"}},
+		{Name: "workplace", Type: field.TypeString, Nullable: true},
+		{Name: "roles", Type: field.TypeJSON, Nullable: true, Default: "[]"},
+		{Name: "default_expr", Type: field.TypeString, Nullable: true, Default: schema.Expr("lower('hello')")},
+		{Name: "default_exprs", Type: field.TypeString, Nullable: true, Default: map[string]schema.Expr{"mysql": "TO_BASE64('ent')", "postgres": "md5('ent')", "sqlite3": "hex('ent')"}},
+		{Name: "created_at", Type: field.TypeTime, Default: "CURRENT_TIMESTAMP"},
+		{Name: "drop_optional", Type: field.TypeString},
+		{Name: "blog_admins", Type: field.TypeInt, Nullable: true, SchemaType: map[string]string{"postgres": "serial"}},
+	}
+	// UsersTable holds the schema information for the "users" table.
+	UsersTable = &schema.Table{
+		Name:       "users",
+		Columns:    UsersColumns,
+		PrimaryKey: []*schema.Column{UsersColumns[0]},
+		ForeignKeys: []*schema.ForeignKey{
+			{
+				Symbol:     "users_blogs_admins",
+				Columns:    []*schema.Column{UsersColumns[22]},
+				RefColumns: []*schema.Column{BlogsColumns[0]},
+				OnDelete:   schema.SetNull,
+			},
+		},
+		Indexes: []*schema.Index{
+			{
+				Name:    "user_description",
+				Unique:  false,
+				Columns: []*schema.Column{UsersColumns[6]},
+				Annotation: &entsql.IndexAnnotation{
+					Prefix: 100,
+				},
+			},
+			{
+				Name:    "user_phone_age",
+				Unique:  true,
+				Columns: []*schema.Column{UsersColumns[8], UsersColumns[4]},
+			},
+			{
+				Name:    "user_age",
+				Unique:  false,
+				Columns: []*schema.Column{UsersColumns[4]},
+				Annotation: &entsql.IndexAnnotation{
+					Desc: true,
+				},
+			},
+			{
+				Name:    "user_nickname",
+				Unique:  false,
+				Columns: []*schema.Column{UsersColumns[7]},
+				Annotation: &entsql.IndexAnnotation{
+					Types: map[string]string{
+						"mysql": "FULLTEXT",
+					},
+				},
+			},
+			{
+				Name:    "user_workplace",
+				Unique:  false,
+				Columns: []*schema.Column{UsersColumns[16]},
+				Annotation: &entsql.IndexAnnotation{
+					IncludeColumns: []string{
+						UsersColumns[7].Name,
+					},
+				},
+			},
+			{
+				Name:    "user_phone",
+				Unique:  false,
+				Columns: []*schema.Column{UsersColumns[8]},
+				Annotation: &entsql.IndexAnnotation{
+					Where: "active AND \"phone\" <> ''",
+				},
+			},
+			{
+				Name:    "user_age_phone",
+				Unique:  false,
+				Columns: []*schema.Column{UsersColumns[4], UsersColumns[8]},
+				Annotation: &entsql.IndexAnnotation{
+					OpClassColumns: map[string]string{
+						UsersColumns[8].Name: "bpchar_pattern_ops",
+					},
+				},
+			},
+		},
+	}
+	// ZoosColumns holds the columns for the "zoos" table.
+	ZoosColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt, Increment: true, Default: map[string]schema.Expr{"mysql": "floor(rand() * ~(1<<31))", "postgres": "floor(random() * ~(1<<31))", "sqlite3": "abs(random())"}},
+	}
+	// ZoosTable holds the schema information for the "zoos" table.
+	ZoosTable = &schema.Table{
+		Name:       "zoos",
+		Columns:    ZoosColumns,
+		PrimaryKey: []*schema.Column{ZoosColumns[0]},
+	}
+	// FriendsColumns holds the columns for the "friends" table.
+	FriendsColumns = []*schema.Column{
+		{Name: "user", Type: field.TypeInt},
+		{Name: "friend", Type: field.TypeInt},
+	}
+	// FriendsTable holds the schema information for the "friends" table.
+	FriendsTable = &schema.Table{
+		Name:       "friends",
+		Columns:    FriendsColumns,
+		PrimaryKey: []*schema.Column{FriendsColumns[0], FriendsColumns[1]},
+		ForeignKeys: []*schema.ForeignKey{
+			{
+				Symbol:     "user_friend_id1",
+				Columns:    []*schema.Column{FriendsColumns[0]},
+				RefColumns: []*schema.Column{UsersColumns[0]},
+				OnDelete:   schema.Cascade,
+			},
+			{
+				Symbol:     "user_friend_id2",
+				Columns:    []*schema.Column{FriendsColumns[1]},
+				RefColumns: []*schema.Column{UsersColumns[0]},
+				OnDelete:   schema.Cascade,
+			},
+		},
+	}
+	// Tables holds all the tables in the schema.
+	Tables = []*schema.Table{
+		BlogsTable,
+		CarTable,
+		ConversionsTable,
+		CustomTypesTable,
+		GroupsTable,
+		MediaTable,
+		PetsTable,
+		UsersTable,
+		ZoosTable,
+		FriendsTable,
+	}
+)
+
+func init() {
+	CarTable.ForeignKeys[0].RefTable = UsersTable
+	CarTable.Annotation = &entsql.Annotation{
+		Table: "Car",
+	}
+	MediaTable.Annotation = &entsql.Annotation{
+		Check: "text <> 'boring'",
+	}
+	MediaTable.Annotation.Checks = map[string]string{
+		"boring_check": "source_uri <> 'entgo.io'",
+	}
+	PetsTable.ForeignKeys[0].RefTable = UsersTable
+	UsersTable.ForeignKeys[0].RefTable = BlogsTable
+	FriendsTable.ForeignKeys[0].RefTable = UsersTable
+	FriendsTable.ForeignKeys[1].RefTable = UsersTable
+}

entc/integration/migrate/entv2/pet.go

@@ -0,0 +1,146 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"fmt"
+	"strings"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/pet"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+)
+
+// Pet is the model entity for the Pet schema.
+type Pet struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int `json:"id,omitempty"`
+	// Name holds the value of the "name" field.
+	Name string `json:"name,omitempty"`
+	// Edges holds the relations/edges for other nodes in the graph.
+	// The values are being populated by the PetQuery when eager-loading is set.
+	Edges        PetEdges `json:"edges"`
+	owner_id     *int
+	selectValues sql.SelectValues
+}
+
+// PetEdges holds the relations/edges for other nodes in the graph.
+type PetEdges struct {
+	// Owner holds the value of the owner edge.
+	Owner *User `json:"owner,omitempty"`
+	// loadedTypes holds the information for reporting if a
+	// type was loaded (or requested) in eager-loading or not.
+	loadedTypes [1]bool
+}
+
+// OwnerOrErr returns the Owner value or an error if the edge
+// was not loaded in eager-loading, or loaded but was not found.
+func (e PetEdges) OwnerOrErr() (*User, error) {
+	if e.Owner != nil {
+		return e.Owner, nil
+	} else if e.loadedTypes[0] {
+		return nil, &NotFoundError{label: user.Label}
+	}
+	return nil, &NotLoadedError{edge: "owner"}
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*Pet) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case pet.FieldID:
+			values[i] = new(sql.NullInt64)
+		case pet.FieldName:
+			values[i] = new(sql.NullString)
+		case pet.ForeignKeys[0]: // owner_id
+			values[i] = new(sql.NullInt64)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the Pet fields.
+func (_m *Pet) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case pet.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int(value.Int64)
+		case pet.FieldName:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field name", values[i])
+			} else if value.Valid {
+				_m.Name = value.String
+			}
+		case pet.ForeignKeys[0]:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for edge-field owner_id", value)
+			} else if value.Valid {
+				_m.owner_id = new(int)
+				*_m.owner_id = int(value.Int64)
+			}
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the Pet.
+// This includes values selected through modifiers, order, etc.
+func (_m *Pet) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// QueryOwner queries the "owner" edge of the Pet entity.
+func (_m *Pet) QueryOwner() *UserQuery {
+	return NewPetClient(_m.config).QueryOwner(_m)
+}
+
+// Update returns a builder for updating this Pet.
+// Note that you need to call Pet.Unwrap() before calling this method if this Pet
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *Pet) Update() *PetUpdateOne {
+	return NewPetClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the Pet entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *Pet) Unwrap() *Pet {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("entv2: Pet is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *Pet) String() string {
+	var builder strings.Builder
+	builder.WriteString("Pet(")
+	builder.WriteString(fmt.Sprintf("id=%v, ", _m.ID))
+	builder.WriteString("name=")
+	builder.WriteString(_m.Name)
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// Pets is a parsable slice of Pet.
+type Pets []*Pet

entc/integration/migrate/entv2/pet/mutation.go

@@ -0,0 +1,322 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package pet
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// Mutation represents an operation that mutates the Pet nodes in the graph.
+type Mutation struct {
+	op            ent.Op
+	typ           string
+	name          *string
+	clearedFields map[string]struct{}
+	owner         *int
+	clearedowner  bool
+	predicates    []predicate.Pet
+}
+
+// NewMutation creates a new Mutation for the Pet entity.
+func NewMutation(op ent.Op) *Mutation {
+	return &Mutation{
+		op:            op,
+		typ:           "Pet",
+		clearedFields: make(map[string]struct{}),
+	}
+}
+
+// Predicates returns the list of predicates set on the mutation.
+func (m *Mutation) Predicates() []predicate.Pet {
+	return m.predicates
+}
+
+// SetName sets the "name" field.
+func (m *Mutation) SetName(s string) {
+	m.name = &s
+}
+
+// Name returns the value of the "name" field in the mutation.
+func (m *Mutation) Name() (r string, exists bool) {
+	v := m.name
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearName clears the value of the "name" field.
+func (m *Mutation) ClearName() {
+	m.name = nil
+	m.clearedFields[FieldName] = struct{}{}
+}
+
+// NameCleared returns if the "name" field was cleared in this mutation.
+func (m *Mutation) NameCleared() bool {
+	_, ok := m.clearedFields[FieldName]
+	return ok
+}
+
+// ResetName resets all changes to the "name" field.
+func (m *Mutation) ResetName() {
+	m.name = nil
+	delete(m.clearedFields, FieldName)
+}
+
+// SetOwnerID sets the "owner" edge to the User entity by id.
+func (m *Mutation) SetOwnerID(id int) {
+	m.owner = &id
+}
+
+// ClearOwner clears the "owner" edge to the User entity.
+func (m *Mutation) ClearOwner() {
+	m.clearedowner = true
+}
+
+// OwnerCleared reports if the "owner" edge to the User entity was cleared.
+func (m *Mutation) OwnerCleared() bool {
+	return m.clearedowner
+}
+
+// OwnerID returns the "owner" edge ID in the mutation.
+func (m *Mutation) OwnerID() (id int, exists bool) {
+	if m.owner != nil {
+		return *m.owner, true
+	}
+	return
+}
+
+// OwnerIDs returns the "owner" edge IDs in the mutation.
+// Note that IDs always returns len(IDs) <= 1 for unique edges, and you should use
+// OwnerID instead. It exists only for internal usage by the builders.
+func (m *Mutation) OwnerIDs() (ids []int) {
+	if id := m.owner; id != nil {
+		ids = append(ids, *id)
+	}
+	return
+}
+
+// ResetOwner resets all changes to the "owner" edge.
+func (m *Mutation) ResetOwner() {
+	m.owner = nil
+	m.clearedowner = false
+}
+
+// Where appends a list predicates to the Mutation builder.
+func (m *Mutation) Where(ps ...predicate.Pet) {
+	m.predicates = append(m.predicates, ps...)
+}
+
+// WhereP appends storage-level predicates to the Mutation builder. Using this method,
+// users can use type-assertion to append predicates that do not depend on any generated package.
+func (m *Mutation) WhereP(ps ...func(*sql.Selector)) {
+	p := make([]predicate.Pet, len(ps))
+	for i := range ps {
+		p[i] = ps[i]
+	}
+	m.Where(p...)
+}
+
+// Op returns the operation name.
+func (m *Mutation) Op() ent.Op {
+	return m.op
+}
+
+// SetOp allows setting the mutation operation.
+func (m *Mutation) SetOp(op ent.Op) {
+	m.op = op
+}
+
+// Type returns the node type of this mutation (Pet).
+func (m *Mutation) Type() string {
+	return m.typ
+}
+
+// Fields returns all fields that were changed during this mutation. Note that in
+// order to get all numeric fields that were incremented/decremented, call
+// AddedFields().
+func (m *Mutation) Fields() []string {
+	fields := make([]string, 0, 1)
+	if m.name != nil {
+		fields = append(fields, FieldName)
+	}
+	return fields
+}
+
+// Field returns the value of a field with the given name. The second boolean
+// return value indicates that this field was not set, or was not defined in the
+// schema.
+func (m *Mutation) Field(name string) (ent.Value, bool) {
+	switch name {
+	case FieldName:
+		return m.Name()
+	}
+	return nil, false
+}
+
+// OldField returns the old value of the field from the database. An error is
+// returned if the mutation operation is not UpdateOne, or the query to the
+// database failed.
+func (m *Mutation) OldField(ctx context.Context, name string) (ent.Value, error) {
+	return nil, fmt.Errorf("unknown Pet field %s", name)
+}
+
+// SetField sets the value of a field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) SetField(name string, value ent.Value) error {
+	switch name {
+	case FieldName:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetName(v)
+		return nil
+	}
+	return fmt.Errorf("unknown Pet field %s", name)
+}
+
+// AddedFields returns all numeric fields that were incremented/decremented during
+// this mutation.
+func (m *Mutation) AddedFields() []string {
+	return nil
+}
+
+// AddedField returns the numeric value that was incremented/decremented on a field
+// with the given name. The second boolean return value indicates that this field
+// was not set, or was not defined in the schema.
+func (m *Mutation) AddedField(name string) (ent.Value, bool) {
+	return nil, false
+}
+
+// AddField adds the value to the field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) AddField(name string, value ent.Value) error {
+	switch name {
+	}
+	return fmt.Errorf("unknown Pet numeric field %s", name)
+}
+
+// ClearedFields returns all nullable fields that were cleared during this
+// mutation.
+func (m *Mutation) ClearedFields() []string {
+	var fields []string
+	if m.FieldCleared(FieldName) {
+		fields = append(fields, FieldName)
+	}
+	return fields
+}
+
+// FieldCleared returns a boolean indicating if a field with the given name was
+// cleared in this mutation.
+func (m *Mutation) FieldCleared(name string) bool {
+	_, ok := m.clearedFields[name]
+	return ok
+}
+
+// ClearField clears the value of the field with the given name. It returns an
+// error if the field is not defined in the schema.
+func (m *Mutation) ClearField(name string) error {
+	switch name {
+	case FieldName:
+		m.ClearName()
+		return nil
+	}
+	return fmt.Errorf("unknown Pet nullable field %s", name)
+}
+
+// ResetField resets all changes in the mutation for the field with the given name.
+// It returns an error if the field is not defined in the schema.
+func (m *Mutation) ResetField(name string) error {
+	switch name {
+	case FieldName:
+		m.ResetName()
+		return nil
+	}
+	return fmt.Errorf("unknown Pet field %s", name)
+}
+
+// AddedEdges returns all edge names that were set/added in this mutation.
+func (m *Mutation) AddedEdges() []string {
+	edges := make([]string, 0, 1)
+	if m.owner != nil {
+		edges = append(edges, EdgeOwner)
+	}
+	return edges
+}
+
+// AddedIDs returns all IDs (to other nodes) that were added for the given edge
+// name in this mutation.
+func (m *Mutation) AddedIDs(name string) []ent.Value {
+	switch name {
+	case EdgeOwner:
+		if id := m.owner; id != nil {
+			return []ent.Value{*id}
+		}
+	}
+	return nil
+}
+
+// RemovedEdges returns all edge names that were removed in this mutation.
+func (m *Mutation) RemovedEdges() []string {
+	edges := make([]string, 0, 1)
+	return edges
+}
+
+// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
+// the given name in this mutation.
+func (m *Mutation) RemovedIDs(name string) []ent.Value {
+	return nil
+}
+
+// ClearedEdges returns all edge names that were cleared in this mutation.
+func (m *Mutation) ClearedEdges() []string {
+	edges := make([]string, 0, 1)
+	if m.clearedowner {
+		edges = append(edges, EdgeOwner)
+	}
+	return edges
+}
+
+// EdgeCleared returns a boolean which indicates if the edge with the given name
+// was cleared in this mutation.
+func (m *Mutation) EdgeCleared(name string) bool {
+	switch name {
+	case EdgeOwner:
+		return m.clearedowner
+	}
+	return false
+}
+
+// ClearEdge clears the value of the edge with the given name. It returns an error
+// if that edge is not defined in the schema.
+func (m *Mutation) ClearEdge(name string) error {
+	switch name {
+	case EdgeOwner:
+		m.ClearOwner()
+		return nil
+	}
+	return fmt.Errorf("unknown Pet unique edge %s", name)
+}
+
+// ResetEdge resets all changes to the edge with the given name in this mutation.
+// It returns an error if the edge is not defined in the schema.
+func (m *Mutation) ResetEdge(name string) error {
+	switch name {
+	case EdgeOwner:
+		m.ResetOwner()
+		return nil
+	}
+	return fmt.Errorf("unknown Pet edge %s", name)
+}

entc/integration/migrate/entv2/pet/pet.go

@@ -0,0 +1,88 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package pet
+
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+)
+
+const (
+	// Label holds the string label denoting the pet type in the database.
+	Label = "pet"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldName holds the string denoting the name field in the database.
+	FieldName = "name"
+	// EdgeOwner holds the string denoting the owner edge name in mutations.
+	EdgeOwner = "owner"
+	// UserFieldID holds the string denoting the ID field of the User.
+	UserFieldID = "oid"
+	// Table holds the table name of the pet in the database.
+	Table = "pets"
+	// OwnerTable is the table that holds the owner relation/edge.
+	OwnerTable = "pets"
+	// OwnerInverseTable is the table name for the User entity.
+	// It exists in this package in order to avoid circular dependency with the "user" package.
+	OwnerInverseTable = "users"
+	// OwnerColumn is the table column denoting the owner relation/edge.
+	OwnerColumn = "owner_id"
+)
+
+// Columns holds all SQL columns for pet fields.
+var Columns = []string{
+	FieldID,
+	FieldName,
+}
+
+// ForeignKeys holds the SQL foreign-keys that are owned by the "pets"
+// table and are not defined as standalone fields in the schema.
+var ForeignKeys = []string{
+	"owner_id",
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	for i := range ForeignKeys {
+		if column == ForeignKeys[i] {
+			return true
+		}
+	}
+	return false
+}
+
+// OrderOption defines the ordering options for the Pet queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByName orders the results by the name field.
+func ByName(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldName, opts...).ToFunc()
+}
+
+// ByOwnerField orders the results by owner field.
+func ByOwnerField(field string, opts ...sql.OrderTermOption) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newOwnerStep(), sql.OrderByField(field, opts...))
+	}
+}
+func newOwnerStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(OwnerInverseTable, UserFieldID),
+		sqlgraph.Edge(sqlgraph.O2O, true, OwnerTable, OwnerColumn),
+	)
+}

entc/integration/migrate/entv2/pet/where.go

@@ -0,0 +1,176 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package pet
+
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int) predicate.Pet {
+	return predicate.Pet(sql.FieldEQ(FieldID, id))
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int) predicate.Pet {
+	return predicate.Pet(sql.FieldEQ(FieldID, id))
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int) predicate.Pet {
+	return predicate.Pet(sql.FieldNEQ(FieldID, id))
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int) predicate.Pet {
+	return predicate.Pet(sql.FieldIn(FieldID, ids...))
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int) predicate.Pet {
+	return predicate.Pet(sql.FieldNotIn(FieldID, ids...))
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int) predicate.Pet {
+	return predicate.Pet(sql.FieldGT(FieldID, id))
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int) predicate.Pet {
+	return predicate.Pet(sql.FieldGTE(FieldID, id))
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int) predicate.Pet {
+	return predicate.Pet(sql.FieldLT(FieldID, id))
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int) predicate.Pet {
+	return predicate.Pet(sql.FieldLTE(FieldID, id))
+}
+
+// Name applies equality check predicate on the "name" field. It's identical to NameEQ.
+func Name(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldEQ(FieldName, v))
+}
+
+// NameEQ applies the EQ predicate on the "name" field.
+func NameEQ(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldEQ(FieldName, v))
+}
+
+// NameNEQ applies the NEQ predicate on the "name" field.
+func NameNEQ(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldNEQ(FieldName, v))
+}
+
+// NameIn applies the In predicate on the "name" field.
+func NameIn(vs ...string) predicate.Pet {
+	return predicate.Pet(sql.FieldIn(FieldName, vs...))
+}
+
+// NameNotIn applies the NotIn predicate on the "name" field.
+func NameNotIn(vs ...string) predicate.Pet {
+	return predicate.Pet(sql.FieldNotIn(FieldName, vs...))
+}
+
+// NameGT applies the GT predicate on the "name" field.
+func NameGT(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldGT(FieldName, v))
+}
+
+// NameGTE applies the GTE predicate on the "name" field.
+func NameGTE(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldGTE(FieldName, v))
+}
+
+// NameLT applies the LT predicate on the "name" field.
+func NameLT(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldLT(FieldName, v))
+}
+
+// NameLTE applies the LTE predicate on the "name" field.
+func NameLTE(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldLTE(FieldName, v))
+}
+
+// NameContains applies the Contains predicate on the "name" field.
+func NameContains(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldContains(FieldName, v))
+}
+
+// NameHasPrefix applies the HasPrefix predicate on the "name" field.
+func NameHasPrefix(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldHasPrefix(FieldName, v))
+}
+
+// NameHasSuffix applies the HasSuffix predicate on the "name" field.
+func NameHasSuffix(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldHasSuffix(FieldName, v))
+}
+
+// NameIsNil applies the IsNil predicate on the "name" field.
+func NameIsNil() predicate.Pet {
+	return predicate.Pet(sql.FieldIsNull(FieldName))
+}
+
+// NameNotNil applies the NotNil predicate on the "name" field.
+func NameNotNil() predicate.Pet {
+	return predicate.Pet(sql.FieldNotNull(FieldName))
+}
+
+// NameEqualFold applies the EqualFold predicate on the "name" field.
+func NameEqualFold(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldEqualFold(FieldName, v))
+}
+
+// NameContainsFold applies the ContainsFold predicate on the "name" field.
+func NameContainsFold(v string) predicate.Pet {
+	return predicate.Pet(sql.FieldContainsFold(FieldName, v))
+}
+
+// HasOwner applies the HasEdge predicate on the "owner" edge.
+func HasOwner() predicate.Pet {
+	return predicate.Pet(func(s *sql.Selector) {
+		step := sqlgraph.NewStep(
+			sqlgraph.From(Table, FieldID),
+			sqlgraph.Edge(sqlgraph.O2O, true, OwnerTable, OwnerColumn),
+		)
+		sqlgraph.HasNeighbors(s, step)
+	})
+}
+
+// HasOwnerWith applies the HasEdge predicate on the "owner" edge with a given conditions (other predicates).
+func HasOwnerWith(preds ...predicate.User) predicate.Pet {
+	return predicate.Pet(func(s *sql.Selector) {
+		step := newOwnerStep()
+		sqlgraph.HasNeighborsWith(s, step, func(s *sql.Selector) {
+			for _, p := range preds {
+				p(s)
+			}
+		})
+	})
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.Pet) predicate.Pet {
+	return predicate.Pet(sql.AndPredicates(predicates...))
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.Pet) predicate.Pet {
+	return predicate.Pet(sql.OrPredicates(predicates...))
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.Pet) predicate.Pet {
+	return predicate.Pet(sql.NotPredicates(p))
+}

entc/integration/migrate/entv2/pet_create.go

@@ -0,0 +1,228 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/pet"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// PetCreate is the builder for creating a Pet entity.
+type PetCreate struct {
+	config
+	mutation *PetMutation
+	hooks    []Hook
+}
+
+// SetName sets the "name" field.
+func (_c *PetCreate) SetName(v string) *PetCreate {
+	_c.mutation.SetName(v)
+	return _c
+}
+
+// SetNillableName sets the "name" field if the given value is not nil.
+func (_c *PetCreate) SetNillableName(v *string) *PetCreate {
+	if v != nil {
+		_c.SetName(*v)
+	}
+	return _c
+}
+
+// SetOwnerID sets the "owner" edge to the User entity by ID.
+func (_c *PetCreate) SetOwnerID(id int) *PetCreate {
+	_c.mutation.SetOwnerID(id)
+	return _c
+}
+
+// SetNillableOwnerID sets the "owner" edge to the User entity by ID if the given value is not nil.
+func (_c *PetCreate) SetNillableOwnerID(id *int) *PetCreate {
+	if id != nil {
+		_c = _c.SetOwnerID(*id)
+	}
+	return _c
+}
+
+// SetOwner sets the "owner" edge to the User entity.
+func (_c *PetCreate) SetOwner(v *User) *PetCreate {
+	return _c.SetOwnerID(v.ID)
+}
+
+// Mutation returns the PetMutation object of the builder.
+func (_c *PetCreate) Mutation() *PetMutation {
+	return _c.mutation
+}
+
+// Save creates the Pet in the database.
+func (_c *PetCreate) Save(ctx context.Context) (*Pet, error) {
+	return withHooks(ctx, _c.sqlSave, _c.mutation, _c.hooks)
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (_c *PetCreate) SaveX(ctx context.Context) *Pet {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *PetCreate) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *PetCreate) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_c *PetCreate) check() error {
+	return nil
+}
+
+func (_c *PetCreate) sqlSave(ctx context.Context) (*Pet, error) {
+	if err := _c.check(); err != nil {
+		return nil, err
+	}
+	_node, _spec := _c.createSpec()
+	if err := sqlgraph.CreateNode(ctx, _c.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	id := _spec.ID.Value.(int64)
+	_node.ID = int(id)
+	_c.mutation.id = &_node.ID
+	_c.mutation.done = true
+	return _node, nil
+}
+
+func (_c *PetCreate) createSpec() (*Pet, *sqlgraph.CreateSpec) {
+	var (
+		_node = &Pet{config: _c.config}
+		_spec = sqlgraph.NewCreateSpec(pet.Table, sqlgraph.NewFieldSpec(pet.FieldID, field.TypeInt))
+	)
+	if value, ok := _c.mutation.Name(); ok {
+		_spec.SetField(pet.FieldName, field.TypeString, value)
+		_node.Name = value
+	}
+	if nodes := _c.mutation.OwnerIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2O,
+			Inverse: true,
+			Table:   pet.OwnerTable,
+			Columns: []string{pet.OwnerColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_node.owner_id = &nodes[0]
+		_spec.Edges = append(_spec.Edges, edge)
+	}
+	return _node, _spec
+}
+
+// PetCreateBulk is the builder for creating many Pet entities in bulk.
+type PetCreateBulk struct {
+	config
+	err      error
+	builders []*PetCreate
+}
+
+// Save creates the Pet entities in the database.
+func (_c *PetCreateBulk) Save(ctx context.Context) ([]*Pet, error) {
+	if _c.err != nil {
+		return nil, _c.err
+	}
+	specs := make([]*sqlgraph.CreateSpec, len(_c.builders))
+	nodes := make([]*Pet, len(_c.builders))
+	mutators := make([]Mutator, len(_c.builders))
+	for i := range _c.builders {
+		func(i int, root context.Context) {
+			builder := _c.builders[i]
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*PetMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				var err error
+				nodes[i], specs[i] = builder.createSpec()
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, _c.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, _c.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{msg: err.Error(), wrap: err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				if specs[i].ID.Value != nil {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int(id)
+				}
+				mutation.done = true
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, _c.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_c *PetCreateBulk) SaveX(ctx context.Context) []*Pet {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *PetCreateBulk) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *PetCreateBulk) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/pet_delete.go

@@ -0,0 +1,92 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/pet"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/schema/field"
+)
+
+// PetDelete is the builder for deleting a Pet entity.
+type PetDelete struct {
+	config
+	hooks    []Hook
+	mutation *PetMutation
+}
+
+// Where appends a list predicates to the PetDelete builder.
+func (_d *PetDelete) Where(ps ...predicate.Pet) *PetDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *PetDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *PetDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *PetDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(pet.Table, sqlgraph.NewFieldSpec(pet.FieldID, field.TypeInt))
+	if ps := _d.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// PetDeleteOne is the builder for deleting a single Pet entity.
+type PetDeleteOne struct {
+	_d *PetDelete
+}
+
+// Where appends a list predicates to the PetDelete builder.
+func (_d *PetDeleteOne) Where(ps ...predicate.Pet) *PetDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *PetDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{pet.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *PetDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/pet_query.go

@@ -0,0 +1,618 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/pet"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// PetQuery is the builder for querying Pet entities.
+type PetQuery struct {
+	config
+	ctx        *QueryContext
+	order      []pet.OrderOption
+	inters     []Interceptor
+	predicates []predicate.Pet
+	withOwner  *UserQuery
+	withFKs    bool
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the PetQuery builder.
+func (_q *PetQuery) Where(ps ...predicate.Pet) *PetQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *PetQuery) Limit(limit int) *PetQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *PetQuery) Offset(offset int) *PetQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *PetQuery) Unique(unique bool) *PetQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *PetQuery) Order(o ...pet.OrderOption) *PetQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// QueryOwner chains the current query on the "owner" edge.
+func (_q *PetQuery) QueryOwner() *UserQuery {
+	query := (&UserClient{config: _q.config}).Query()
+	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
+		if err := _q.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		selector := _q.sqlQuery(ctx)
+		if err := selector.Err(); err != nil {
+			return nil, err
+		}
+		step := sqlgraph.NewStep(
+			sqlgraph.From(pet.Table, pet.FieldID, selector),
+			sqlgraph.To(user.Table, user.FieldID),
+			sqlgraph.Edge(sqlgraph.O2O, true, pet.OwnerTable, pet.OwnerColumn),
+		)
+		fromU = sqlgraph.SetNeighbors(_q.driver.Dialect(), step)
+		return fromU, nil
+	}
+	return query
+}
+
+// First returns the first Pet entity from the query.
+// Returns a *NotFoundError when no Pet was found.
+func (_q *PetQuery) First(ctx context.Context) (*Pet, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{pet.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *PetQuery) FirstX(ctx context.Context) *Pet {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first Pet ID from the query.
+// Returns a *NotFoundError when no Pet ID was found.
+func (_q *PetQuery) FirstID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{pet.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *PetQuery) FirstIDX(ctx context.Context) int {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single Pet entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one Pet entity is found.
+// Returns a *NotFoundError when no Pet entities are found.
+func (_q *PetQuery) Only(ctx context.Context) (*Pet, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{pet.Label}
+	default:
+		return nil, &NotSingularError{pet.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *PetQuery) OnlyX(ctx context.Context) *Pet {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only Pet ID in the query.
+// Returns a *NotSingularError when more than one Pet ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *PetQuery) OnlyID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{pet.Label}
+	default:
+		err = &NotSingularError{pet.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *PetQuery) OnlyIDX(ctx context.Context) int {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of Pets.
+func (_q *PetQuery) All(ctx context.Context) ([]*Pet, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*Pet, *PetQuery]()
+	return withInterceptors[[]*Pet](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *PetQuery) AllX(ctx context.Context) []*Pet {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of Pet IDs.
+func (_q *PetQuery) IDs(ctx context.Context) (ids []int, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(pet.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *PetQuery) IDsX(ctx context.Context) []int {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *PetQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*PetQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *PetQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *PetQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("entv2: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *PetQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the PetQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *PetQuery) Clone() *PetQuery {
+	if _q == nil {
+		return nil
+	}
+	return &PetQuery{
+		config:     _q.config,
+		ctx:        _q.ctx.Clone(),
+		order:      append([]pet.OrderOption{}, _q.order...),
+		inters:     append([]Interceptor{}, _q.inters...),
+		predicates: append([]predicate.Pet{}, _q.predicates...),
+		withOwner:  _q.withOwner.Clone(),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// WithOwner tells the query-builder to eager-load the nodes that are connected to
+// the "owner" edge. The optional arguments are used to configure the query builder of the edge.
+func (_q *PetQuery) WithOwner(opts ...func(*UserQuery)) *PetQuery {
+	query := (&UserClient{config: _q.config}).Query()
+	for _, opt := range opts {
+		opt(query)
+	}
+	_q.withOwner = query
+	return _q
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		Name string `json:"name,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.Pet.Query().
+//		GroupBy(pet.FieldName).
+//		Aggregate(entv2.Count()).
+//		Scan(ctx, &v)
+func (_q *PetQuery) GroupBy(field string, fields ...string) *PetGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &PetGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = pet.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		Name string `json:"name,omitempty"`
+//	}
+//
+//	client.Pet.Query().
+//		Select(pet.FieldName).
+//		Scan(ctx, &v)
+func (_q *PetQuery) Select(fields ...string) *PetSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &PetSelect{PetQuery: _q}
+	sbuild.label = pet.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a PetSelect configured with the given aggregations.
+func (_q *PetQuery) Aggregate(fns ...AggregateFunc) *PetSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *PetQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("entv2: uninitialized interceptor (forgotten import entv2/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !pet.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *PetQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Pet, error) {
+	var (
+		nodes       = []*Pet{}
+		withFKs     = _q.withFKs
+		_spec       = _q.querySpec()
+		loadedTypes = [1]bool{
+			_q.withOwner != nil,
+		}
+	)
+	if _q.withOwner != nil {
+		withFKs = true
+	}
+	if withFKs {
+		_spec.Node.Columns = append(_spec.Node.Columns, pet.ForeignKeys...)
+	}
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*Pet).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &Pet{config: _q.config}
+		nodes = append(nodes, node)
+		node.Edges.loadedTypes = loadedTypes
+		return node.assignValues(columns, values)
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	if query := _q.withOwner; query != nil {
+		if err := _q.loadOwner(ctx, query, nodes, nil,
+			func(n *Pet, e *User) { n.Edges.Owner = e }); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+func (_q *PetQuery) loadOwner(ctx context.Context, query *UserQuery, nodes []*Pet, init func(*Pet), assign func(*Pet, *User)) error {
+	ids := make([]int, 0, len(nodes))
+	nodeids := make(map[int][]*Pet)
+	for i := range nodes {
+		if nodes[i].owner_id == nil {
+			continue
+		}
+		fk := *nodes[i].owner_id
+		if _, ok := nodeids[fk]; !ok {
+			ids = append(ids, fk)
+		}
+		nodeids[fk] = append(nodeids[fk], nodes[i])
+	}
+	if len(ids) == 0 {
+		return nil
+	}
+	query.Where(user.IDIn(ids...))
+	neighbors, err := query.All(ctx)
+	if err != nil {
+		return err
+	}
+	for _, n := range neighbors {
+		nodes, ok := nodeids[n.ID]
+		if !ok {
+			return fmt.Errorf(`unexpected foreign-key "owner_id" returned %v`, n.ID)
+		}
+		for i := range nodes {
+			assign(nodes[i], n)
+		}
+	}
+	return nil
+}
+
+func (_q *PetQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *PetQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(pet.Table, pet.Columns, sqlgraph.NewFieldSpec(pet.FieldID, field.TypeInt))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, pet.FieldID)
+		for i := range fields {
+			if fields[i] != pet.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *PetQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(pet.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = pet.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// PetGroupBy is the group-by builder for Pet entities.
+type PetGroupBy struct {
+	selector
+	build *PetQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *PetGroupBy) Aggregate(fns ...AggregateFunc) *PetGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *PetGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*PetQuery, *PetGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *PetGroupBy) sqlScan(ctx context.Context, root *PetQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// PetSelect is the builder for selecting fields of Pet entities.
+type PetSelect struct {
+	*PetQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *PetSelect) Aggregate(fns ...AggregateFunc) *PetSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *PetSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*PetQuery, *PetSelect](ctx, _s.PetQuery, _s, _s.inters, v)
+}
+
+func (_s *PetSelect) sqlScan(ctx context.Context, root *PetQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

entc/integration/migrate/entv2/pet_update.go

@@ -0,0 +1,340 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/pet"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// PetUpdate is the builder for updating Pet entities.
+type PetUpdate struct {
+	config
+	hooks    []Hook
+	mutation *PetMutation
+}
+
+// Where appends a list predicates to the PetUpdate builder.
+func (_u *PetUpdate) Where(ps ...predicate.Pet) *PetUpdate {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// SetName sets the "name" field.
+func (_u *PetUpdate) SetName(v string) *PetUpdate {
+	_u.mutation.SetName(v)
+	return _u
+}
+
+// SetNillableName sets the "name" field if the given value is not nil.
+func (_u *PetUpdate) SetNillableName(v *string) *PetUpdate {
+	if v != nil {
+		_u.SetName(*v)
+	}
+	return _u
+}
+
+// ClearName clears the value of the "name" field.
+func (_u *PetUpdate) ClearName() *PetUpdate {
+	_u.mutation.ClearName()
+	return _u
+}
+
+// SetOwnerID sets the "owner" edge to the User entity by ID.
+func (_u *PetUpdate) SetOwnerID(id int) *PetUpdate {
+	_u.mutation.SetOwnerID(id)
+	return _u
+}
+
+// SetNillableOwnerID sets the "owner" edge to the User entity by ID if the given value is not nil.
+func (_u *PetUpdate) SetNillableOwnerID(id *int) *PetUpdate {
+	if id != nil {
+		_u = _u.SetOwnerID(*id)
+	}
+	return _u
+}
+
+// SetOwner sets the "owner" edge to the User entity.
+func (_u *PetUpdate) SetOwner(v *User) *PetUpdate {
+	return _u.SetOwnerID(v.ID)
+}
+
+// Mutation returns the PetMutation object of the builder.
+func (_u *PetUpdate) Mutation() *PetMutation {
+	return _u.mutation
+}
+
+// ClearOwner clears the "owner" edge to the User entity.
+func (_u *PetUpdate) ClearOwner() *PetUpdate {
+	_u.mutation.ClearOwner()
+	return _u
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (_u *PetUpdate) Save(ctx context.Context) (int, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *PetUpdate) SaveX(ctx context.Context) int {
+	affected, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (_u *PetUpdate) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *PetUpdate) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *PetUpdate) sqlSave(ctx context.Context) (_node int, err error) {
+	_spec := sqlgraph.NewUpdateSpec(pet.Table, pet.Columns, sqlgraph.NewFieldSpec(pet.FieldID, field.TypeInt))
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Name(); ok {
+		_spec.SetField(pet.FieldName, field.TypeString, value)
+	}
+	if _u.mutation.NameCleared() {
+		_spec.ClearField(pet.FieldName, field.TypeString)
+	}
+	if _u.mutation.OwnerCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2O,
+			Inverse: true,
+			Table:   pet.OwnerTable,
+			Columns: []string{pet.OwnerColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.OwnerIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2O,
+			Inverse: true,
+			Table:   pet.OwnerTable,
+			Columns: []string{pet.OwnerColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{pet.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return 0, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}
+
+// PetUpdateOne is the builder for updating a single Pet entity.
+type PetUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *PetMutation
+}
+
+// SetName sets the "name" field.
+func (_u *PetUpdateOne) SetName(v string) *PetUpdateOne {
+	_u.mutation.SetName(v)
+	return _u
+}
+
+// SetNillableName sets the "name" field if the given value is not nil.
+func (_u *PetUpdateOne) SetNillableName(v *string) *PetUpdateOne {
+	if v != nil {
+		_u.SetName(*v)
+	}
+	return _u
+}
+
+// ClearName clears the value of the "name" field.
+func (_u *PetUpdateOne) ClearName() *PetUpdateOne {
+	_u.mutation.ClearName()
+	return _u
+}
+
+// SetOwnerID sets the "owner" edge to the User entity by ID.
+func (_u *PetUpdateOne) SetOwnerID(id int) *PetUpdateOne {
+	_u.mutation.SetOwnerID(id)
+	return _u
+}
+
+// SetNillableOwnerID sets the "owner" edge to the User entity by ID if the given value is not nil.
+func (_u *PetUpdateOne) SetNillableOwnerID(id *int) *PetUpdateOne {
+	if id != nil {
+		_u = _u.SetOwnerID(*id)
+	}
+	return _u
+}
+
+// SetOwner sets the "owner" edge to the User entity.
+func (_u *PetUpdateOne) SetOwner(v *User) *PetUpdateOne {
+	return _u.SetOwnerID(v.ID)
+}
+
+// Mutation returns the PetMutation object of the builder.
+func (_u *PetUpdateOne) Mutation() *PetMutation {
+	return _u.mutation
+}
+
+// ClearOwner clears the "owner" edge to the User entity.
+func (_u *PetUpdateOne) ClearOwner() *PetUpdateOne {
+	_u.mutation.ClearOwner()
+	return _u
+}
+
+// Where appends a list predicates to the PetUpdate builder.
+func (_u *PetUpdateOne) Where(ps ...predicate.Pet) *PetUpdateOne {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (_u *PetUpdateOne) Select(field string, fields ...string) *PetUpdateOne {
+	_u.fields = append([]string{field}, fields...)
+	return _u
+}
+
+// Save executes the query and returns the updated Pet entity.
+func (_u *PetUpdateOne) Save(ctx context.Context) (*Pet, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *PetUpdateOne) SaveX(ctx context.Context) *Pet {
+	node, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (_u *PetUpdateOne) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *PetUpdateOne) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *PetUpdateOne) sqlSave(ctx context.Context) (_node *Pet, err error) {
+	_spec := sqlgraph.NewUpdateSpec(pet.Table, pet.Columns, sqlgraph.NewFieldSpec(pet.FieldID, field.TypeInt))
+	id, ok := _u.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "id", err: errors.New(`entv2: missing "Pet.id" for update`)}
+	}
+	_spec.Node.ID.Value = id
+	if fields := _u.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, pet.FieldID)
+		for _, f := range fields {
+			if !pet.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+			}
+			if f != pet.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Name(); ok {
+		_spec.SetField(pet.FieldName, field.TypeString, value)
+	}
+	if _u.mutation.NameCleared() {
+		_spec.ClearField(pet.FieldName, field.TypeString)
+	}
+	if _u.mutation.OwnerCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2O,
+			Inverse: true,
+			Table:   pet.OwnerTable,
+			Columns: []string{pet.OwnerColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.OwnerIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2O,
+			Inverse: true,
+			Table:   pet.OwnerTable,
+			Columns: []string{pet.OwnerColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	_node = &Pet{config: _u.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{pet.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}

entc/integration/migrate/entv2/predicate/predicate.go

@@ -0,0 +1,38 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package predicate
+
+import (
+	"entgo.io/ent/dialect/sql"
+)
+
+// Blog is the predicate function for blog builders.
+type Blog func(*sql.Selector)
+
+// Car is the predicate function for car builders.
+type Car func(*sql.Selector)
+
+// Conversion is the predicate function for conversion builders.
+type Conversion func(*sql.Selector)
+
+// CustomType is the predicate function for customtype builders.
+type CustomType func(*sql.Selector)
+
+// Group is the predicate function for group builders.
+type Group func(*sql.Selector)
+
+// Media is the predicate function for media builders.
+type Media func(*sql.Selector)
+
+// Pet is the predicate function for pet builders.
+type Pet func(*sql.Selector)
+
+// User is the predicate function for user builders.
+type User func(*sql.Selector)
+
+// Zoo is the predicate function for zoo builders.
+type Zoo func(*sql.Selector)

entc/integration/migrate/entv2/runtime.go

@@ -0,0 +1,65 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"time"
+
+	"entgo.io/ent/entc/integration/migrate/entv2/schema"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+)
+
+// The init function reads all schema descriptors with runtime code
+// (default values, validators, hooks and policies) and stitches it
+// to their package variables.
+func init() {
+	userMixin := schema.User{}.Mixin()
+	userMixinFields0 := userMixin[0].Fields()
+	_ = userMixinFields0
+	userFields := schema.User{}.Fields()
+	_ = userFields
+	// userDescMixedString is the schema descriptor for mixed_string field.
+	userDescMixedString := userMixinFields0[0].Descriptor()
+	// user.DefaultMixedString holds the default value on creation for the mixed_string field.
+	user.DefaultMixedString = userDescMixedString.Default.(string)
+	// userDescActive is the schema descriptor for active field.
+	userDescActive := userFields[1].Descriptor()
+	// user.DefaultActive holds the default value on creation for the active field.
+	user.DefaultActive = userDescActive.Default.(bool)
+	// userDescNickname is the schema descriptor for nickname field.
+	userDescNickname := userFields[5].Descriptor()
+	// user.NicknameValidator is a validator for the "nickname" field. It is called by the builders before save.
+	user.NicknameValidator = userDescNickname.Validators[0].(func(string) error)
+	// userDescPhone is the schema descriptor for phone field.
+	userDescPhone := userFields[6].Descriptor()
+	// user.DefaultPhone holds the default value on creation for the phone field.
+	user.DefaultPhone = userDescPhone.Default.(string)
+	// userDescBuffer is the schema descriptor for buffer field.
+	userDescBuffer := userFields[7].Descriptor()
+	// user.DefaultBuffer holds the default value on creation for the buffer field.
+	user.DefaultBuffer = userDescBuffer.Default.(func() []byte)
+	// userDescTitle is the schema descriptor for title field.
+	userDescTitle := userFields[8].Descriptor()
+	// user.DefaultTitle holds the default value on creation for the title field.
+	user.DefaultTitle = userDescTitle.Default.(string)
+	// userDescNewToken is the schema descriptor for new_token field.
+	userDescNewToken := userFields[10].Descriptor()
+	// user.DefaultNewToken holds the default value on creation for the new_token field.
+	user.DefaultNewToken = userDescNewToken.Default.(func() string)
+	// userDescBlob is the schema descriptor for blob field.
+	userDescBlob := userFields[11].Descriptor()
+	// user.BlobValidator is a validator for the "blob" field. It is called by the builders before save.
+	user.BlobValidator = userDescBlob.Validators[0].(func([]byte) error)
+	// userDescCreatedAt is the schema descriptor for created_at field.
+	userDescCreatedAt := userFields[18].Descriptor()
+	// user.DefaultCreatedAt holds the default value on creation for the created_at field.
+	user.DefaultCreatedAt = userDescCreatedAt.Default.(func() time.Time)
+	// userDescDropOptional is the schema descriptor for drop_optional field.
+	userDescDropOptional := userFields[19].Descriptor()
+	// user.DefaultDropOptional holds the default value on creation for the drop_optional field.
+	user.DefaultDropOptional = userDescDropOptional.Default.(func() string)
+}

entc/integration/migrate/entv2/runtime/runtime.go

@@ -0,0 +1,13 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package runtime
+
+// The schema-stitching logic is generated in entgo.io/ent/entc/integration/migrate/entv2/runtime.go
+
+const (
+	Version = "v0.0.0-00010101000000-000000000000" // Version of ent codegen.
+)

entc/integration/migrate/entv2/schema/conversion.go

@@ -0,0 +1,51 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+package schema
+
+import (
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema/field"
+)
+
+// Conversion holds the schema definition for the Conversion entity.
+type Conversion struct {
+	ent.Schema
+}
+
+// Fields of the Conversion.
+func (Conversion) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("name").
+			Optional(),
+		// Convert integer fields to string
+		// Postgres uses the same type for int8 and int16
+		// Postgres loses unsigned so we have assume value is signed
+		field.String("int8_to_string").
+			Optional().
+			Annotations(entsql.Annotation{Size: 6}),
+		field.String("uint8_to_string").
+			Optional().
+			Annotations(entsql.Annotation{Size: 6}),
+		field.String("int16_to_string").
+			Optional().
+			Annotations(entsql.Annotation{Size: 6}),
+		field.String("uint16_to_string").
+			Optional().
+			Annotations(entsql.Annotation{Size: 6}),
+		field.String("int32_to_string").
+			Optional().
+			Annotations(entsql.Annotation{Size: 12}),
+		field.String("uint32_to_string").
+			Optional().
+			Annotations(entsql.Annotation{Size: 12}),
+		field.String("int64_to_string").
+			Optional().
+			Annotations(entsql.Annotation{Size: 21}),
+		field.String("uint64_to_string").
+			Optional().
+			Annotations(entsql.Annotation{Size: 21}),
+	}
+}

entc/integration/migrate/entv2/schema/customtype.go

@@ -0,0 +1,39 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+package schema
+
+import (
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/schema/field"
+)
+
+// CustomType holds the schema definition for the CustomType entity.
+type CustomType struct {
+	ent.Schema
+}
+
+// Fields of the CustomType.
+func (CustomType) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("custom").
+			Optional().
+			SchemaType(map[string]string{
+				dialect.Postgres: "customtype",
+			}),
+		field.Time("tz0").
+			Optional().
+			SchemaType(map[string]string{
+				dialect.MySQL:    "timestamp(0)",
+				dialect.Postgres: "timestamptz(0)",
+			}),
+		field.Time("tz3").
+			Optional().
+			SchemaType(map[string]string{
+				dialect.MySQL:    "timestamp(3)",
+				dialect.Postgres: "timestamptz(3)",
+			}),
+	}
+}

entc/integration/migrate/entv2/schema/media.go

@@ -0,0 +1,57 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+package schema
+
+import (
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema"
+	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/index"
+)
+
+// Media holds the schema definition for the Media entity.
+type Media struct {
+	ent.Schema
+}
+
+// Fields of the Media.
+func (Media) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("source").
+			Optional(),
+		field.String("source_uri").
+			Optional().
+			Comment("source_ui text").
+			Annotations(entsql.WithComments(false)),
+		field.Text("text").
+			Optional().
+			Comment("media text"),
+	}
+}
+
+// Indexes of the Media.
+func (Media) Indexes() []ent.Index {
+	return []ent.Index{
+		index.Fields("source", "source_uri").
+			Annotations(entsql.PrefixColumn("source", 100)).
+			Unique(),
+		// MySQL allow indexing text column prefix.
+		index.Fields("text").
+			Annotations(entsql.Prefix(100)),
+	}
+}
+
+// Annotations of the Media.
+func (Media) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		schema.Comment("Comment that appears in both the schema and the generated code"),
+		entsql.WithComments(true),
+		entsql.Check("text <> 'boring'"),
+		entsql.Checks(map[string]string{
+			"boring_check": "source_uri <> 'entgo.io'",
+		}),
+	}
+}

entc/integration/migrate/entv2/schema/user.go

@@ -0,0 +1,260 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+package schema
+
+import (
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema"
+	"entgo.io/ent/schema/edge"
+	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/index"
+	"entgo.io/ent/schema/mixin"
+
+	"ariga.io/atlas/sql/postgres"
+	"github.com/google/uuid"
+)
+
+type Mixin struct {
+	mixin.Schema
+}
+
+func (m Mixin) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("mixed_string").
+			Default("default"),
+		field.Enum("mixed_enum").
+			Values("on", "off").
+			Default("on"),
+	}
+}
+
+// User holds the schema definition for the User entity.
+type User struct {
+	ent.Schema
+}
+
+func (User) Mixin() []ent.Mixin {
+	return []ent.Mixin{
+		Mixin{},
+	}
+}
+
+// Fields of the User.
+func (User) Fields() []ent.Field {
+	return []ent.Field{
+		field.Int("id").
+			StorageKey("oid"),
+		// add a new column.
+		field.Bool("active").
+			Default(true),
+		// changing the type of the field.
+		field.Int("age"),
+		// extending name field to longtext.
+		field.Text("name"),
+		// extending the index prefix below (on MySQL).
+		field.Text("description").
+			Optional(),
+		// changing nickname from unique no non-unique.
+		field.String("nickname").
+			MaxLen(255),
+		// adding new columns (must be either optional, or with a default value).
+		field.String("phone").
+			Default("unknown"),
+		field.Bytes("buffer").
+			Optional().
+			DefaultFunc(func() []byte { return []byte("null") }),
+		// adding new column with supported default value
+		// in the database side, will append this value to
+		// all existing rows.
+		field.String("title").
+			Default("SWE"),
+		// change column name and reference it to the
+		// previous one using storage-key ("renamed").
+		field.String("new_name").
+			Optional().
+			StorageKey("renamed"),
+		// change column name from "old_token" to "new_token"
+		// and use Atlas diff hook in the migration.
+		field.String("new_token").
+			DefaultFunc(uuid.NewString),
+		// extending the blob size.
+		field.Bytes("blob").
+			Optional().
+			MaxLen(1000),
+		// adding enum to the `state` column.
+		field.Enum("state").
+			Optional().
+			Values("logged_in", "logged_out", "online").
+			Default("logged_in"),
+		// convert string to enum.
+		field.Enum("status").
+			Optional().
+			Values("done", "pending"),
+		// remove the max-length constraint from varchar.
+		field.String("workplace").
+			Optional(),
+		// JSON field with database-default value.
+		field.Strings("roles").
+			Optional().
+			Annotations(entsql.Default(`[]`)),
+		field.String("default_expr").
+			Optional().
+			Annotations(entsql.DefaultExpr("lower('hello')")),
+		field.String("default_exprs").
+			Optional().
+			Annotations(entsql.DefaultExprs(map[string]string{
+				dialect.MySQL:    "TO_BASE64('ent')",
+				dialect.SQLite:   "hex('ent')",
+				dialect.Postgres: "md5('ent')",
+			})),
+		// add a new column with generated values by the database.
+		field.Time("created_at").
+			Default(time.Now).
+			Annotations(&entsql.Annotation{
+				Default: "CURRENT_TIMESTAMP",
+			}),
+		// nullable field was changed to non-nullable without a static
+		// default value, and it requires apply hook to fix this.
+		field.String("drop_optional").
+			DefaultFunc(uuid.NewString),
+		// deleting the `address` column.
+	}
+}
+
+func (User) Edges() []ent.Edge {
+	return []ent.Edge{
+		// Edge(children<-M2O->parent) to be dropped.
+		// Edge(spouse<-O2O->spouse) to be dropped.
+		edge.To("car", Car.Type),
+		// New edges to added.
+		edge.To("pets", Pet.Type).
+			StorageKey(edge.Column("owner_id"), edge.Symbol("user_pet_id")).
+			Unique(),
+		edge.To("friends", User.Type).
+			StorageKey(
+				edge.Table("friends"),
+				edge.Columns("user", "friend"),
+				edge.Symbols("user_friend_id1", "user_friend_id2"),
+			),
+	}
+}
+
+func (User) Indexes() []ent.Index {
+	return []ent.Index{
+		// Extend the column prefix by drop and create
+		// this index on MySQL.
+		index.Fields("description").
+			Annotations(entsql.Prefix(100)),
+		// Deleting old indexes (name, address),
+		// and defining a new one.
+		index.Fields("phone", "age").
+			Unique(),
+		index.Fields("age").
+			Annotations(entsql.Desc()),
+		// Enable FULLTEXT search on "nickname"
+		// field only in MySQL.
+		index.Fields("nickname").
+			Annotations(
+				entsql.IndexTypes(map[string]string{
+					dialect.MySQL: "FULLTEXT",
+				}),
+			),
+		// For PostgreSQL, we can include in the index non-key columns.
+		index.Fields("workplace").
+			Annotations(
+				entsql.IncludeColumns("nickname"),
+			),
+		// For PostgreSQL and SQLite, users can define partial indexes.
+		index.Fields("phone").
+			Annotations(
+				entsql.IndexWhere(`active AND "phone" <> ''`),
+			),
+		// For PostgreSQL, operator classes can be configured for each field.
+		index.Fields("age", "phone").
+			Annotations(
+				entsql.OpClassColumn("phone", "bpchar_pattern_ops"),
+			),
+	}
+}
+
+type Car struct {
+	ent.Schema
+}
+
+// Annotations of the Car.
+func (Car) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		entsql.Annotation{Table: "Car"},
+	}
+}
+
+func (Car) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("name").
+			Optional().
+			Unique(),
+	}
+}
+
+func (Car) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("owner", User.Type).
+			Ref("car").
+			Unique().
+			// Make the M20 edge from nullable to required edge.
+			// Requires column and foreign-key migration.
+			Required(),
+	}
+}
+
+// Group schema.
+type Group struct{ ent.Schema }
+
+// Blog schema.
+type Blog struct{ ent.Schema }
+
+func (Blog) Fields() []ent.Field {
+	return []ent.Field{
+		field.Int("id").
+			SchemaType(map[string]string{
+				dialect.Postgres: postgres.TypeSerial,
+			}),
+		field.Int("oid").
+			SchemaType(map[string]string{
+				dialect.Postgres: postgres.TypeSerial,
+			}),
+	}
+}
+
+func (Blog) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.To("admins", User.Type),
+	}
+}
+
+// Pet schema.
+type Pet struct {
+	ent.Schema
+}
+
+func (Pet) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("name").
+			Optional().
+			Unique(),
+	}
+}
+
+func (Pet) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("owner", User.Type).
+			Ref("pets").
+			Unique(),
+	}
+}

entc/integration/migrate/entv2/schema/zoo.go

@@ -0,0 +1,31 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+package schema
+
+import (
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema/field"
+)
+
+// Zoo holds the schema definition for the Zoo entity.
+type Zoo struct {
+	ent.Schema
+}
+
+// Fields of the Zoo.
+func (Zoo) Fields() []ent.Field {
+	return []ent.Field{
+		field.Int("id").
+			Annotations(
+				entsql.DefaultExprs(map[string]string{
+					dialect.MySQL:    "floor(rand() * ~(1<<31))",
+					dialect.SQLite:   "abs(random())",
+					dialect.Postgres: "floor(random() * ~(1<<31))",
+				}),
+			),
+	}
+}

entc/integration/migrate/entv2/tx.go

@@ -0,0 +1,238 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"sync"
+
+	"entgo.io/ent/dialect"
+)
+
+// Tx is a transactional client that is created by calling Client.Tx().
+type Tx struct {
+	config
+	// Blog is the client for interacting with the Blog builders.
+	Blog *BlogClient
+	// Car is the client for interacting with the Car builders.
+	Car *CarClient
+	// Conversion is the client for interacting with the Conversion builders.
+	Conversion *ConversionClient
+	// CustomType is the client for interacting with the CustomType builders.
+	CustomType *CustomTypeClient
+	// Group is the client for interacting with the Group builders.
+	Group *GroupClient
+	// Media is the client for interacting with the Media builders.
+	Media *MediaClient
+	// Pet is the client for interacting with the Pet builders.
+	Pet *PetClient
+	// User is the client for interacting with the User builders.
+	User *UserClient
+	// Zoo is the client for interacting with the Zoo builders.
+	Zoo *ZooClient
+
+	// lazily loaded.
+	client     *Client
+	clientOnce sync.Once
+	// ctx lives for the life of the transaction. It is
+	// the same context used by the underlying connection.
+	ctx context.Context
+}
+
+type (
+	// Committer is the interface that wraps the Commit method.
+	Committer interface {
+		Commit(context.Context, *Tx) error
+	}
+
+	// The CommitFunc type is an adapter to allow the use of ordinary
+	// function as a Committer. If f is a function with the appropriate
+	// signature, CommitFunc(f) is a Committer that calls f.
+	CommitFunc func(context.Context, *Tx) error
+
+	// CommitHook defines the "commit middleware". A function that gets a Committer
+	// and returns a Committer. For example:
+	//
+	//	hook := func(next ent.Committer) ent.Committer {
+	//		return ent.CommitFunc(func(ctx context.Context, tx *ent.Tx) error {
+	//			// Do some stuff before.
+	//			if err := next.Commit(ctx, tx); err != nil {
+	//				return err
+	//			}
+	//			// Do some stuff after.
+	//			return nil
+	//		})
+	//	}
+	//
+	CommitHook func(Committer) Committer
+)
+
+// Commit calls f(ctx, m).
+func (f CommitFunc) Commit(ctx context.Context, tx *Tx) error {
+	return f(ctx, tx)
+}
+
+// Commit commits the transaction.
+func (tx *Tx) Commit() error {
+	txDriver := tx.config.driver.(*txDriver)
+	var fn Committer = CommitFunc(func(context.Context, *Tx) error {
+		return txDriver.tx.Commit()
+	})
+	txDriver.mu.Lock()
+	hooks := append([]CommitHook(nil), txDriver.onCommit...)
+	txDriver.mu.Unlock()
+	for i := len(hooks) - 1; i >= 0; i-- {
+		fn = hooks[i](fn)
+	}
+	return fn.Commit(tx.ctx, tx)
+}
+
+// OnCommit adds a hook to call on commit.
+func (tx *Tx) OnCommit(f CommitHook) {
+	txDriver := tx.config.driver.(*txDriver)
+	txDriver.mu.Lock()
+	txDriver.onCommit = append(txDriver.onCommit, f)
+	txDriver.mu.Unlock()
+}
+
+type (
+	// Rollbacker is the interface that wraps the Rollback method.
+	Rollbacker interface {
+		Rollback(context.Context, *Tx) error
+	}
+
+	// The RollbackFunc type is an adapter to allow the use of ordinary
+	// function as a Rollbacker. If f is a function with the appropriate
+	// signature, RollbackFunc(f) is a Rollbacker that calls f.
+	RollbackFunc func(context.Context, *Tx) error
+
+	// RollbackHook defines the "rollback middleware". A function that gets a Rollbacker
+	// and returns a Rollbacker. For example:
+	//
+	//	hook := func(next ent.Rollbacker) ent.Rollbacker {
+	//		return ent.RollbackFunc(func(ctx context.Context, tx *ent.Tx) error {
+	//			// Do some stuff before.
+	//			if err := next.Rollback(ctx, tx); err != nil {
+	//				return err
+	//			}
+	//			// Do some stuff after.
+	//			return nil
+	//		})
+	//	}
+	//
+	RollbackHook func(Rollbacker) Rollbacker
+)
+
+// Rollback calls f(ctx, m).
+func (f RollbackFunc) Rollback(ctx context.Context, tx *Tx) error {
+	return f(ctx, tx)
+}
+
+// Rollback rollbacks the transaction.
+func (tx *Tx) Rollback() error {
+	txDriver := tx.config.driver.(*txDriver)
+	var fn Rollbacker = RollbackFunc(func(context.Context, *Tx) error {
+		return txDriver.tx.Rollback()
+	})
+	txDriver.mu.Lock()
+	hooks := append([]RollbackHook(nil), txDriver.onRollback...)
+	txDriver.mu.Unlock()
+	for i := len(hooks) - 1; i >= 0; i-- {
+		fn = hooks[i](fn)
+	}
+	return fn.Rollback(tx.ctx, tx)
+}
+
+// OnRollback adds a hook to call on rollback.
+func (tx *Tx) OnRollback(f RollbackHook) {
+	txDriver := tx.config.driver.(*txDriver)
+	txDriver.mu.Lock()
+	txDriver.onRollback = append(txDriver.onRollback, f)
+	txDriver.mu.Unlock()
+}
+
+// Client returns a Client that binds to current transaction.
+func (tx *Tx) Client() *Client {
+	tx.clientOnce.Do(func() {
+		tx.client = &Client{config: tx.config}
+		tx.client.init()
+	})
+	return tx.client
+}
+
+func (tx *Tx) init() {
+	tx.Blog = NewBlogClient(tx.config)
+	tx.Car = NewCarClient(tx.config)
+	tx.Conversion = NewConversionClient(tx.config)
+	tx.CustomType = NewCustomTypeClient(tx.config)
+	tx.Group = NewGroupClient(tx.config)
+	tx.Media = NewMediaClient(tx.config)
+	tx.Pet = NewPetClient(tx.config)
+	tx.User = NewUserClient(tx.config)
+	tx.Zoo = NewZooClient(tx.config)
+}
+
+// txDriver wraps the given dialect.Tx with a nop dialect.Driver implementation.
+// The idea is to support transactions without adding any extra code to the builders.
+// When a builder calls to driver.Tx(), it gets the same dialect.Tx instance.
+// Commit and Rollback are nop for the internal builders and the user must call one
+// of them in order to commit or rollback the transaction.
+//
+// If a closed transaction is embedded in one of the generated entities, and the entity
+// applies a query, for example: Blog.QueryXXX(), the query will be executed
+// through the driver which created this transaction.
+//
+// Note that txDriver is not goroutine safe.
+type txDriver struct {
+	// the driver we started the transaction from.
+	drv dialect.Driver
+	// tx is the underlying transaction.
+	tx dialect.Tx
+	// completion hooks.
+	mu         sync.Mutex
+	onCommit   []CommitHook
+	onRollback []RollbackHook
+}
+
+// newTx creates a new transactional driver.
+func newTx(ctx context.Context, drv dialect.Driver) (*txDriver, error) {
+	tx, err := drv.Tx(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return &txDriver{tx: tx, drv: drv}, nil
+}
+
+// Tx returns the transaction wrapper (txDriver) to avoid Commit or Rollback calls
+// from the internal builders. Should be called only by the internal builders.
+func (tx *txDriver) Tx(context.Context) (dialect.Tx, error) { return tx, nil }
+
+// Dialect returns the dialect of the driver we started the transaction from.
+func (tx *txDriver) Dialect() string { return tx.drv.Dialect() }
+
+// Close is a nop close.
+func (*txDriver) Close() error { return nil }
+
+// Commit is a nop commit for the internal builders.
+// User must call `Tx.Commit` in order to commit the transaction.
+func (*txDriver) Commit() error { return nil }
+
+// Rollback is a nop rollback for the internal builders.
+// User must call `Tx.Rollback` in order to rollback the transaction.
+func (*txDriver) Rollback() error { return nil }
+
+// Exec calls tx.Exec.
+func (tx *txDriver) Exec(ctx context.Context, query string, args, v any) error {
+	return tx.tx.Exec(ctx, query, args, v)
+}
+
+// Query calls tx.Query.
+func (tx *txDriver) Query(ctx context.Context, query string, args, v any) error {
+	return tx.tx.Query(ctx, query, args, v)
+}
+
+var _ dialect.Driver = (*txDriver)(nil)

entc/integration/migrate/entv2/user.go

@@ -0,0 +1,408 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/pet"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+)
+
+// User is the model entity for the User schema.
+type User struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int `json:"id,omitempty"`
+	// MixedString holds the value of the "mixed_string" field.
+	MixedString string `json:"mixed_string,omitempty"`
+	// MixedEnum holds the value of the "mixed_enum" field.
+	MixedEnum user.MixedEnum `json:"mixed_enum,omitempty"`
+	// Active holds the value of the "active" field.
+	Active bool `json:"active,omitempty"`
+	// Age holds the value of the "age" field.
+	Age int `json:"age,omitempty"`
+	// Name holds the value of the "name" field.
+	Name string `json:"name,omitempty"`
+	// Description holds the value of the "description" field.
+	Description string `json:"description,omitempty"`
+	// Nickname holds the value of the "nickname" field.
+	Nickname string `json:"nickname,omitempty"`
+	// Phone holds the value of the "phone" field.
+	Phone string `json:"phone,omitempty"`
+	// Buffer holds the value of the "buffer" field.
+	Buffer []byte `json:"buffer,omitempty"`
+	// Title holds the value of the "title" field.
+	Title string `json:"title,omitempty"`
+	// NewName holds the value of the "new_name" field.
+	NewName string `json:"new_name,omitempty"`
+	// NewToken holds the value of the "new_token" field.
+	NewToken string `json:"new_token,omitempty"`
+	// Blob holds the value of the "blob" field.
+	Blob []byte `json:"blob,omitempty"`
+	// State holds the value of the "state" field.
+	State user.State `json:"state,omitempty"`
+	// Status holds the value of the "status" field.
+	Status user.Status `json:"status,omitempty"`
+	// Workplace holds the value of the "workplace" field.
+	Workplace string `json:"workplace,omitempty"`
+	// Roles holds the value of the "roles" field.
+	Roles []string `json:"roles,omitempty"`
+	// DefaultExpr holds the value of the "default_expr" field.
+	DefaultExpr string `json:"default_expr,omitempty"`
+	// DefaultExprs holds the value of the "default_exprs" field.
+	DefaultExprs string `json:"default_exprs,omitempty"`
+	// CreatedAt holds the value of the "created_at" field.
+	CreatedAt time.Time `json:"created_at,omitempty"`
+	// DropOptional holds the value of the "drop_optional" field.
+	DropOptional string `json:"drop_optional,omitempty"`
+	// Edges holds the relations/edges for other nodes in the graph.
+	// The values are being populated by the UserQuery when eager-loading is set.
+	Edges        UserEdges `json:"edges"`
+	blog_admins  *int
+	selectValues sql.SelectValues
+}
+
+// UserEdges holds the relations/edges for other nodes in the graph.
+type UserEdges struct {
+	// Car holds the value of the car edge.
+	Car []*Car `json:"car,omitempty"`
+	// Pets holds the value of the pets edge.
+	Pets *Pet `json:"pets,omitempty"`
+	// Friends holds the value of the friends edge.
+	Friends []*User `json:"friends,omitempty"`
+	// loadedTypes holds the information for reporting if a
+	// type was loaded (or requested) in eager-loading or not.
+	loadedTypes [3]bool
+}
+
+// CarOrErr returns the Car value or an error if the edge
+// was not loaded in eager-loading.
+func (e UserEdges) CarOrErr() ([]*Car, error) {
+	if e.loadedTypes[0] {
+		return e.Car, nil
+	}
+	return nil, &NotLoadedError{edge: "car"}
+}
+
+// PetsOrErr returns the Pets value or an error if the edge
+// was not loaded in eager-loading, or loaded but was not found.
+func (e UserEdges) PetsOrErr() (*Pet, error) {
+	if e.Pets != nil {
+		return e.Pets, nil
+	} else if e.loadedTypes[1] {
+		return nil, &NotFoundError{label: pet.Label}
+	}
+	return nil, &NotLoadedError{edge: "pets"}
+}
+
+// FriendsOrErr returns the Friends value or an error if the edge
+// was not loaded in eager-loading.
+func (e UserEdges) FriendsOrErr() ([]*User, error) {
+	if e.loadedTypes[2] {
+		return e.Friends, nil
+	}
+	return nil, &NotLoadedError{edge: "friends"}
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*User) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case user.FieldBuffer, user.FieldBlob, user.FieldRoles:
+			values[i] = new([]byte)
+		case user.FieldActive:
+			values[i] = new(sql.NullBool)
+		case user.FieldID, user.FieldAge:
+			values[i] = new(sql.NullInt64)
+		case user.FieldMixedString, user.FieldMixedEnum, user.FieldName, user.FieldDescription, user.FieldNickname, user.FieldPhone, user.FieldTitle, user.FieldNewName, user.FieldNewToken, user.FieldState, user.FieldStatus, user.FieldWorkplace, user.FieldDefaultExpr, user.FieldDefaultExprs, user.FieldDropOptional:
+			values[i] = new(sql.NullString)
+		case user.FieldCreatedAt:
+			values[i] = new(sql.NullTime)
+		case user.ForeignKeys[0]: // blog_admins
+			values[i] = new(sql.NullInt64)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the User fields.
+func (_m *User) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case user.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int(value.Int64)
+		case user.FieldMixedString:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field mixed_string", values[i])
+			} else if value.Valid {
+				_m.MixedString = value.String
+			}
+		case user.FieldMixedEnum:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field mixed_enum", values[i])
+			} else if value.Valid {
+				_m.MixedEnum = user.MixedEnum(value.String)
+			}
+		case user.FieldActive:
+			if value, ok := values[i].(*sql.NullBool); !ok {
+				return fmt.Errorf("unexpected type %T for field active", values[i])
+			} else if value.Valid {
+				_m.Active = value.Bool
+			}
+		case user.FieldAge:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field age", values[i])
+			} else if value.Valid {
+				_m.Age = int(value.Int64)
+			}
+		case user.FieldName:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field name", values[i])
+			} else if value.Valid {
+				_m.Name = value.String
+			}
+		case user.FieldDescription:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field description", values[i])
+			} else if value.Valid {
+				_m.Description = value.String
+			}
+		case user.FieldNickname:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field nickname", values[i])
+			} else if value.Valid {
+				_m.Nickname = value.String
+			}
+		case user.FieldPhone:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field phone", values[i])
+			} else if value.Valid {
+				_m.Phone = value.String
+			}
+		case user.FieldBuffer:
+			if value, ok := values[i].(*[]byte); !ok {
+				return fmt.Errorf("unexpected type %T for field buffer", values[i])
+			} else if value != nil {
+				_m.Buffer = *value
+			}
+		case user.FieldTitle:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field title", values[i])
+			} else if value.Valid {
+				_m.Title = value.String
+			}
+		case user.FieldNewName:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field new_name", values[i])
+			} else if value.Valid {
+				_m.NewName = value.String
+			}
+		case user.FieldNewToken:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field new_token", values[i])
+			} else if value.Valid {
+				_m.NewToken = value.String
+			}
+		case user.FieldBlob:
+			if value, ok := values[i].(*[]byte); !ok {
+				return fmt.Errorf("unexpected type %T for field blob", values[i])
+			} else if value != nil {
+				_m.Blob = *value
+			}
+		case user.FieldState:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field state", values[i])
+			} else if value.Valid {
+				_m.State = user.State(value.String)
+			}
+		case user.FieldStatus:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field status", values[i])
+			} else if value.Valid {
+				_m.Status = user.Status(value.String)
+			}
+		case user.FieldWorkplace:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field workplace", values[i])
+			} else if value.Valid {
+				_m.Workplace = value.String
+			}
+		case user.FieldRoles:
+			if value, ok := values[i].(*[]byte); !ok {
+				return fmt.Errorf("unexpected type %T for field roles", values[i])
+			} else if value != nil && len(*value) > 0 {
+				if err := json.Unmarshal(*value, &_m.Roles); err != nil {
+					return fmt.Errorf("unmarshal field roles: %w", err)
+				}
+			}
+		case user.FieldDefaultExpr:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field default_expr", values[i])
+			} else if value.Valid {
+				_m.DefaultExpr = value.String
+			}
+		case user.FieldDefaultExprs:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field default_exprs", values[i])
+			} else if value.Valid {
+				_m.DefaultExprs = value.String
+			}
+		case user.FieldCreatedAt:
+			if value, ok := values[i].(*sql.NullTime); !ok {
+				return fmt.Errorf("unexpected type %T for field created_at", values[i])
+			} else if value.Valid {
+				_m.CreatedAt = value.Time
+			}
+		case user.FieldDropOptional:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field drop_optional", values[i])
+			} else if value.Valid {
+				_m.DropOptional = value.String
+			}
+		case user.ForeignKeys[0]:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for edge-field blog_admins", value)
+			} else if value.Valid {
+				_m.blog_admins = new(int)
+				*_m.blog_admins = int(value.Int64)
+			}
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the User.
+// This includes values selected through modifiers, order, etc.
+func (_m *User) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// QueryCar queries the "car" edge of the User entity.
+func (_m *User) QueryCar() *CarQuery {
+	return NewUserClient(_m.config).QueryCar(_m)
+}
+
+// QueryPets queries the "pets" edge of the User entity.
+func (_m *User) QueryPets() *PetQuery {
+	return NewUserClient(_m.config).QueryPets(_m)
+}
+
+// QueryFriends queries the "friends" edge of the User entity.
+func (_m *User) QueryFriends() *UserQuery {
+	return NewUserClient(_m.config).QueryFriends(_m)
+}
+
+// Update returns a builder for updating this User.
+// Note that you need to call User.Unwrap() before calling this method if this User
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *User) Update() *UserUpdateOne {
+	return NewUserClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the User entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *User) Unwrap() *User {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("entv2: User is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *User) String() string {
+	var builder strings.Builder
+	builder.WriteString("User(")
+	builder.WriteString(fmt.Sprintf("id=%v, ", _m.ID))
+	builder.WriteString("mixed_string=")
+	builder.WriteString(_m.MixedString)
+	builder.WriteString(", ")
+	builder.WriteString("mixed_enum=")
+	builder.WriteString(fmt.Sprintf("%v", _m.MixedEnum))
+	builder.WriteString(", ")
+	builder.WriteString("active=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Active))
+	builder.WriteString(", ")
+	builder.WriteString("age=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Age))
+	builder.WriteString(", ")
+	builder.WriteString("name=")
+	builder.WriteString(_m.Name)
+	builder.WriteString(", ")
+	builder.WriteString("description=")
+	builder.WriteString(_m.Description)
+	builder.WriteString(", ")
+	builder.WriteString("nickname=")
+	builder.WriteString(_m.Nickname)
+	builder.WriteString(", ")
+	builder.WriteString("phone=")
+	builder.WriteString(_m.Phone)
+	builder.WriteString(", ")
+	builder.WriteString("buffer=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Buffer))
+	builder.WriteString(", ")
+	builder.WriteString("title=")
+	builder.WriteString(_m.Title)
+	builder.WriteString(", ")
+	builder.WriteString("new_name=")
+	builder.WriteString(_m.NewName)
+	builder.WriteString(", ")
+	builder.WriteString("new_token=")
+	builder.WriteString(_m.NewToken)
+	builder.WriteString(", ")
+	builder.WriteString("blob=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Blob))
+	builder.WriteString(", ")
+	builder.WriteString("state=")
+	builder.WriteString(fmt.Sprintf("%v", _m.State))
+	builder.WriteString(", ")
+	builder.WriteString("status=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Status))
+	builder.WriteString(", ")
+	builder.WriteString("workplace=")
+	builder.WriteString(_m.Workplace)
+	builder.WriteString(", ")
+	builder.WriteString("roles=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Roles))
+	builder.WriteString(", ")
+	builder.WriteString("default_expr=")
+	builder.WriteString(_m.DefaultExpr)
+	builder.WriteString(", ")
+	builder.WriteString("default_exprs=")
+	builder.WriteString(_m.DefaultExprs)
+	builder.WriteString(", ")
+	builder.WriteString("created_at=")
+	builder.WriteString(_m.CreatedAt.Format(time.ANSIC))
+	builder.WriteString(", ")
+	builder.WriteString("drop_optional=")
+	builder.WriteString(_m.DropOptional)
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// Users is a parsable slice of User.
+type Users []*User

entc/integration/migrate/entv2/user/user.go

@@ -0,0 +1,398 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package user
+
+import (
+	"fmt"
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+)
+
+const (
+	// Label holds the string label denoting the user type in the database.
+	Label = "user"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "oid"
+	// FieldMixedString holds the string denoting the mixed_string field in the database.
+	FieldMixedString = "mixed_string"
+	// FieldMixedEnum holds the string denoting the mixed_enum field in the database.
+	FieldMixedEnum = "mixed_enum"
+	// FieldActive holds the string denoting the active field in the database.
+	FieldActive = "active"
+	// FieldAge holds the string denoting the age field in the database.
+	FieldAge = "age"
+	// FieldName holds the string denoting the name field in the database.
+	FieldName = "name"
+	// FieldDescription holds the string denoting the description field in the database.
+	FieldDescription = "description"
+	// FieldNickname holds the string denoting the nickname field in the database.
+	FieldNickname = "nickname"
+	// FieldPhone holds the string denoting the phone field in the database.
+	FieldPhone = "phone"
+	// FieldBuffer holds the string denoting the buffer field in the database.
+	FieldBuffer = "buffer"
+	// FieldTitle holds the string denoting the title field in the database.
+	FieldTitle = "title"
+	// FieldNewName holds the string denoting the new_name field in the database.
+	FieldNewName = "renamed"
+	// FieldNewToken holds the string denoting the new_token field in the database.
+	FieldNewToken = "new_token"
+	// FieldBlob holds the string denoting the blob field in the database.
+	FieldBlob = "blob"
+	// FieldState holds the string denoting the state field in the database.
+	FieldState = "state"
+	// FieldStatus holds the string denoting the status field in the database.
+	FieldStatus = "status"
+	// FieldWorkplace holds the string denoting the workplace field in the database.
+	FieldWorkplace = "workplace"
+	// FieldRoles holds the string denoting the roles field in the database.
+	FieldRoles = "roles"
+	// FieldDefaultExpr holds the string denoting the default_expr field in the database.
+	FieldDefaultExpr = "default_expr"
+	// FieldDefaultExprs holds the string denoting the default_exprs field in the database.
+	FieldDefaultExprs = "default_exprs"
+	// FieldCreatedAt holds the string denoting the created_at field in the database.
+	FieldCreatedAt = "created_at"
+	// FieldDropOptional holds the string denoting the drop_optional field in the database.
+	FieldDropOptional = "drop_optional"
+	// EdgeCar holds the string denoting the car edge name in mutations.
+	EdgeCar = "car"
+	// EdgePets holds the string denoting the pets edge name in mutations.
+	EdgePets = "pets"
+	// EdgeFriends holds the string denoting the friends edge name in mutations.
+	EdgeFriends = "friends"
+	// CarFieldID holds the string denoting the ID field of the Car.
+	CarFieldID = "id"
+	// PetFieldID holds the string denoting the ID field of the Pet.
+	PetFieldID = "id"
+	// Table holds the table name of the user in the database.
+	Table = "users"
+	// CarTable is the table that holds the car relation/edge.
+	CarTable = "Car"
+	// CarInverseTable is the table name for the Car entity.
+	// It exists in this package in order to avoid circular dependency with the "car" package.
+	CarInverseTable = "Car"
+	// CarColumn is the table column denoting the car relation/edge.
+	CarColumn = "user_car"
+	// PetsTable is the table that holds the pets relation/edge.
+	PetsTable = "pets"
+	// PetsInverseTable is the table name for the Pet entity.
+	// It exists in this package in order to avoid circular dependency with the "pet" package.
+	PetsInverseTable = "pets"
+	// PetsColumn is the table column denoting the pets relation/edge.
+	PetsColumn = "owner_id"
+	// FriendsTable is the table that holds the friends relation/edge. The primary key declared below.
+	FriendsTable = "friends"
+)
+
+// Columns holds all SQL columns for user fields.
+var Columns = []string{
+	FieldID,
+	FieldMixedString,
+	FieldMixedEnum,
+	FieldActive,
+	FieldAge,
+	FieldName,
+	FieldDescription,
+	FieldNickname,
+	FieldPhone,
+	FieldBuffer,
+	FieldTitle,
+	FieldNewName,
+	FieldNewToken,
+	FieldBlob,
+	FieldState,
+	FieldStatus,
+	FieldWorkplace,
+	FieldRoles,
+	FieldDefaultExpr,
+	FieldDefaultExprs,
+	FieldCreatedAt,
+	FieldDropOptional,
+}
+
+// ForeignKeys holds the SQL foreign-keys that are owned by the "users"
+// table and are not defined as standalone fields in the schema.
+var ForeignKeys = []string{
+	"blog_admins",
+}
+
+var (
+	// FriendsPrimaryKey and FriendsColumn2 are the table columns denoting the
+	// primary key for the friends relation (M2M).
+	FriendsPrimaryKey = []string{"user", "friend"}
+)
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	for i := range ForeignKeys {
+		if column == ForeignKeys[i] {
+			return true
+		}
+	}
+	return false
+}
+
+var (
+	// DefaultMixedString holds the default value on creation for the "mixed_string" field.
+	DefaultMixedString string
+	// DefaultActive holds the default value on creation for the "active" field.
+	DefaultActive bool
+	// NicknameValidator is a validator for the "nickname" field. It is called by the builders before save.
+	NicknameValidator func(string) error
+	// DefaultPhone holds the default value on creation for the "phone" field.
+	DefaultPhone string
+	// DefaultBuffer holds the default value on creation for the "buffer" field.
+	DefaultBuffer func() []byte
+	// DefaultTitle holds the default value on creation for the "title" field.
+	DefaultTitle string
+	// DefaultNewToken holds the default value on creation for the "new_token" field.
+	DefaultNewToken func() string
+	// BlobValidator is a validator for the "blob" field. It is called by the builders before save.
+	BlobValidator func([]byte) error
+	// DefaultCreatedAt holds the default value on creation for the "created_at" field.
+	DefaultCreatedAt func() time.Time
+	// DefaultDropOptional holds the default value on creation for the "drop_optional" field.
+	DefaultDropOptional func() string
+)
+
+// MixedEnum defines the type for the "mixed_enum" enum field.
+type MixedEnum string
+
+// MixedEnumOn is the default value of the MixedEnum enum.
+const DefaultMixedEnum = MixedEnumOn
+
+// MixedEnum values.
+const (
+	MixedEnumOn  MixedEnum = "on"
+	MixedEnumOff MixedEnum = "off"
+)
+
+func (me MixedEnum) String() string {
+	return string(me)
+}
+
+// MixedEnumValidator is a validator for the "mixed_enum" field enum values. It is called by the builders before save.
+func MixedEnumValidator(me MixedEnum) error {
+	switch me {
+	case MixedEnumOn, MixedEnumOff:
+		return nil
+	default:
+		return fmt.Errorf("user: invalid enum value for mixed_enum field: %q", me)
+	}
+}
+
+// State defines the type for the "state" enum field.
+type State string
+
+// StateLoggedIn is the default value of the State enum.
+const DefaultState = StateLoggedIn
+
+// State values.
+const (
+	StateLoggedIn  State = "logged_in"
+	StateLoggedOut State = "logged_out"
+	StateOnline    State = "online"
+)
+
+func (s State) String() string {
+	return string(s)
+}
+
+// StateValidator is a validator for the "state" field enum values. It is called by the builders before save.
+func StateValidator(s State) error {
+	switch s {
+	case StateLoggedIn, StateLoggedOut, StateOnline:
+		return nil
+	default:
+		return fmt.Errorf("user: invalid enum value for state field: %q", s)
+	}
+}
+
+// Status defines the type for the "status" enum field.
+type Status string
+
+// Status values.
+const (
+	StatusDone    Status = "done"
+	StatusPending Status = "pending"
+)
+
+func (s Status) String() string {
+	return string(s)
+}
+
+// StatusValidator is a validator for the "status" field enum values. It is called by the builders before save.
+func StatusValidator(s Status) error {
+	switch s {
+	case StatusDone, StatusPending:
+		return nil
+	default:
+		return fmt.Errorf("user: invalid enum value for status field: %q", s)
+	}
+}
+
+// OrderOption defines the ordering options for the User queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByMixedString orders the results by the mixed_string field.
+func ByMixedString(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldMixedString, opts...).ToFunc()
+}
+
+// ByMixedEnum orders the results by the mixed_enum field.
+func ByMixedEnum(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldMixedEnum, opts...).ToFunc()
+}
+
+// ByActive orders the results by the active field.
+func ByActive(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldActive, opts...).ToFunc()
+}
+
+// ByAge orders the results by the age field.
+func ByAge(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldAge, opts...).ToFunc()
+}
+
+// ByName orders the results by the name field.
+func ByName(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldName, opts...).ToFunc()
+}
+
+// ByDescription orders the results by the description field.
+func ByDescription(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldDescription, opts...).ToFunc()
+}
+
+// ByNickname orders the results by the nickname field.
+func ByNickname(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldNickname, opts...).ToFunc()
+}
+
+// ByPhone orders the results by the phone field.
+func ByPhone(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldPhone, opts...).ToFunc()
+}
+
+// ByTitle orders the results by the title field.
+func ByTitle(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldTitle, opts...).ToFunc()
+}
+
+// ByNewName orders the results by the new_name field.
+func ByNewName(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldNewName, opts...).ToFunc()
+}
+
+// ByNewToken orders the results by the new_token field.
+func ByNewToken(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldNewToken, opts...).ToFunc()
+}
+
+// ByState orders the results by the state field.
+func ByState(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldState, opts...).ToFunc()
+}
+
+// ByStatus orders the results by the status field.
+func ByStatus(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldStatus, opts...).ToFunc()
+}
+
+// ByWorkplace orders the results by the workplace field.
+func ByWorkplace(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldWorkplace, opts...).ToFunc()
+}
+
+// ByDefaultExpr orders the results by the default_expr field.
+func ByDefaultExpr(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldDefaultExpr, opts...).ToFunc()
+}
+
+// ByDefaultExprs orders the results by the default_exprs field.
+func ByDefaultExprs(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldDefaultExprs, opts...).ToFunc()
+}
+
+// ByCreatedAt orders the results by the created_at field.
+func ByCreatedAt(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldCreatedAt, opts...).ToFunc()
+}
+
+// ByDropOptional orders the results by the drop_optional field.
+func ByDropOptional(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldDropOptional, opts...).ToFunc()
+}
+
+// ByCarCount orders the results by car count.
+func ByCarCount(opts ...sql.OrderTermOption) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborsCount(s, newCarStep(), opts...)
+	}
+}
+
+// ByCar orders the results by car terms.
+func ByCar(term sql.OrderTerm, terms ...sql.OrderTerm) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newCarStep(), append([]sql.OrderTerm{term}, terms...)...)
+	}
+}
+
+// ByPetsField orders the results by pets field.
+func ByPetsField(field string, opts ...sql.OrderTermOption) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newPetsStep(), sql.OrderByField(field, opts...))
+	}
+}
+
+// ByFriendsCount orders the results by friends count.
+func ByFriendsCount(opts ...sql.OrderTermOption) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborsCount(s, newFriendsStep(), opts...)
+	}
+}
+
+// ByFriends orders the results by friends terms.
+func ByFriends(term sql.OrderTerm, terms ...sql.OrderTerm) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newFriendsStep(), append([]sql.OrderTerm{term}, terms...)...)
+	}
+}
+func newCarStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(CarInverseTable, CarFieldID),
+		sqlgraph.Edge(sqlgraph.O2M, false, CarTable, CarColumn),
+	)
+}
+func newPetsStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(PetsInverseTable, PetFieldID),
+		sqlgraph.Edge(sqlgraph.O2O, false, PetsTable, PetsColumn),
+	)
+}
+func newFriendsStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(Table, FieldID),
+		sqlgraph.Edge(sqlgraph.M2M, false, FriendsTable, FriendsPrimaryKey...),
+	)
+}

entc/integration/migrate/entv2/user_create.go

@@ -0,0 +1,720 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/car"
+	"entgo.io/ent/entc/integration/migrate/entv2/pet"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// UserCreate is the builder for creating a User entity.
+type UserCreate struct {
+	config
+	mutation *UserMutation
+	hooks    []Hook
+}
+
+// SetMixedString sets the "mixed_string" field.
+func (_c *UserCreate) SetMixedString(v string) *UserCreate {
+	_c.mutation.SetMixedString(v)
+	return _c
+}
+
+// SetNillableMixedString sets the "mixed_string" field if the given value is not nil.
+func (_c *UserCreate) SetNillableMixedString(v *string) *UserCreate {
+	if v != nil {
+		_c.SetMixedString(*v)
+	}
+	return _c
+}
+
+// SetMixedEnum sets the "mixed_enum" field.
+func (_c *UserCreate) SetMixedEnum(v user.MixedEnum) *UserCreate {
+	_c.mutation.SetMixedEnum(v)
+	return _c
+}
+
+// SetNillableMixedEnum sets the "mixed_enum" field if the given value is not nil.
+func (_c *UserCreate) SetNillableMixedEnum(v *user.MixedEnum) *UserCreate {
+	if v != nil {
+		_c.SetMixedEnum(*v)
+	}
+	return _c
+}
+
+// SetActive sets the "active" field.
+func (_c *UserCreate) SetActive(v bool) *UserCreate {
+	_c.mutation.SetActive(v)
+	return _c
+}
+
+// SetNillableActive sets the "active" field if the given value is not nil.
+func (_c *UserCreate) SetNillableActive(v *bool) *UserCreate {
+	if v != nil {
+		_c.SetActive(*v)
+	}
+	return _c
+}
+
+// SetAge sets the "age" field.
+func (_c *UserCreate) SetAge(v int) *UserCreate {
+	_c.mutation.SetAge(v)
+	return _c
+}
+
+// SetName sets the "name" field.
+func (_c *UserCreate) SetName(v string) *UserCreate {
+	_c.mutation.SetName(v)
+	return _c
+}
+
+// SetDescription sets the "description" field.
+func (_c *UserCreate) SetDescription(v string) *UserCreate {
+	_c.mutation.SetDescription(v)
+	return _c
+}
+
+// SetNillableDescription sets the "description" field if the given value is not nil.
+func (_c *UserCreate) SetNillableDescription(v *string) *UserCreate {
+	if v != nil {
+		_c.SetDescription(*v)
+	}
+	return _c
+}
+
+// SetNickname sets the "nickname" field.
+func (_c *UserCreate) SetNickname(v string) *UserCreate {
+	_c.mutation.SetNickname(v)
+	return _c
+}
+
+// SetPhone sets the "phone" field.
+func (_c *UserCreate) SetPhone(v string) *UserCreate {
+	_c.mutation.SetPhone(v)
+	return _c
+}
+
+// SetNillablePhone sets the "phone" field if the given value is not nil.
+func (_c *UserCreate) SetNillablePhone(v *string) *UserCreate {
+	if v != nil {
+		_c.SetPhone(*v)
+	}
+	return _c
+}
+
+// SetBuffer sets the "buffer" field.
+func (_c *UserCreate) SetBuffer(v []byte) *UserCreate {
+	_c.mutation.SetBuffer(v)
+	return _c
+}
+
+// SetTitle sets the "title" field.
+func (_c *UserCreate) SetTitle(v string) *UserCreate {
+	_c.mutation.SetTitle(v)
+	return _c
+}
+
+// SetNillableTitle sets the "title" field if the given value is not nil.
+func (_c *UserCreate) SetNillableTitle(v *string) *UserCreate {
+	if v != nil {
+		_c.SetTitle(*v)
+	}
+	return _c
+}
+
+// SetNewName sets the "new_name" field.
+func (_c *UserCreate) SetNewName(v string) *UserCreate {
+	_c.mutation.SetNewName(v)
+	return _c
+}
+
+// SetNillableNewName sets the "new_name" field if the given value is not nil.
+func (_c *UserCreate) SetNillableNewName(v *string) *UserCreate {
+	if v != nil {
+		_c.SetNewName(*v)
+	}
+	return _c
+}
+
+// SetNewToken sets the "new_token" field.
+func (_c *UserCreate) SetNewToken(v string) *UserCreate {
+	_c.mutation.SetNewToken(v)
+	return _c
+}
+
+// SetNillableNewToken sets the "new_token" field if the given value is not nil.
+func (_c *UserCreate) SetNillableNewToken(v *string) *UserCreate {
+	if v != nil {
+		_c.SetNewToken(*v)
+	}
+	return _c
+}
+
+// SetBlob sets the "blob" field.
+func (_c *UserCreate) SetBlob(v []byte) *UserCreate {
+	_c.mutation.SetBlob(v)
+	return _c
+}
+
+// SetState sets the "state" field.
+func (_c *UserCreate) SetState(v user.State) *UserCreate {
+	_c.mutation.SetState(v)
+	return _c
+}
+
+// SetNillableState sets the "state" field if the given value is not nil.
+func (_c *UserCreate) SetNillableState(v *user.State) *UserCreate {
+	if v != nil {
+		_c.SetState(*v)
+	}
+	return _c
+}
+
+// SetStatus sets the "status" field.
+func (_c *UserCreate) SetStatus(v user.Status) *UserCreate {
+	_c.mutation.SetStatus(v)
+	return _c
+}
+
+// SetNillableStatus sets the "status" field if the given value is not nil.
+func (_c *UserCreate) SetNillableStatus(v *user.Status) *UserCreate {
+	if v != nil {
+		_c.SetStatus(*v)
+	}
+	return _c
+}
+
+// SetWorkplace sets the "workplace" field.
+func (_c *UserCreate) SetWorkplace(v string) *UserCreate {
+	_c.mutation.SetWorkplace(v)
+	return _c
+}
+
+// SetNillableWorkplace sets the "workplace" field if the given value is not nil.
+func (_c *UserCreate) SetNillableWorkplace(v *string) *UserCreate {
+	if v != nil {
+		_c.SetWorkplace(*v)
+	}
+	return _c
+}
+
+// SetRoles sets the "roles" field.
+func (_c *UserCreate) SetRoles(v []string) *UserCreate {
+	_c.mutation.SetRoles(v)
+	return _c
+}
+
+// SetDefaultExpr sets the "default_expr" field.
+func (_c *UserCreate) SetDefaultExpr(v string) *UserCreate {
+	_c.mutation.SetDefaultExpr(v)
+	return _c
+}
+
+// SetNillableDefaultExpr sets the "default_expr" field if the given value is not nil.
+func (_c *UserCreate) SetNillableDefaultExpr(v *string) *UserCreate {
+	if v != nil {
+		_c.SetDefaultExpr(*v)
+	}
+	return _c
+}
+
+// SetDefaultExprs sets the "default_exprs" field.
+func (_c *UserCreate) SetDefaultExprs(v string) *UserCreate {
+	_c.mutation.SetDefaultExprs(v)
+	return _c
+}
+
+// SetNillableDefaultExprs sets the "default_exprs" field if the given value is not nil.
+func (_c *UserCreate) SetNillableDefaultExprs(v *string) *UserCreate {
+	if v != nil {
+		_c.SetDefaultExprs(*v)
+	}
+	return _c
+}
+
+// SetCreatedAt sets the "created_at" field.
+func (_c *UserCreate) SetCreatedAt(v time.Time) *UserCreate {
+	_c.mutation.SetCreatedAt(v)
+	return _c
+}
+
+// SetNillableCreatedAt sets the "created_at" field if the given value is not nil.
+func (_c *UserCreate) SetNillableCreatedAt(v *time.Time) *UserCreate {
+	if v != nil {
+		_c.SetCreatedAt(*v)
+	}
+	return _c
+}
+
+// SetDropOptional sets the "drop_optional" field.
+func (_c *UserCreate) SetDropOptional(v string) *UserCreate {
+	_c.mutation.SetDropOptional(v)
+	return _c
+}
+
+// SetNillableDropOptional sets the "drop_optional" field if the given value is not nil.
+func (_c *UserCreate) SetNillableDropOptional(v *string) *UserCreate {
+	if v != nil {
+		_c.SetDropOptional(*v)
+	}
+	return _c
+}
+
+// SetID sets the "id" field.
+func (_c *UserCreate) SetID(v int) *UserCreate {
+	_c.mutation.SetID(v)
+	return _c
+}
+
+// AddCarIDs adds the "car" edge to the Car entity by IDs.
+func (_c *UserCreate) AddCarIDs(ids ...int) *UserCreate {
+	_c.mutation.AddCarIDs(ids...)
+	return _c
+}
+
+// AddCar adds the "car" edges to the Car entity.
+func (_c *UserCreate) AddCar(v ...*Car) *UserCreate {
+	ids := make([]int, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _c.AddCarIDs(ids...)
+}
+
+// SetPetsID sets the "pets" edge to the Pet entity by ID.
+func (_c *UserCreate) SetPetsID(id int) *UserCreate {
+	_c.mutation.SetPetsID(id)
+	return _c
+}
+
+// SetNillablePetsID sets the "pets" edge to the Pet entity by ID if the given value is not nil.
+func (_c *UserCreate) SetNillablePetsID(id *int) *UserCreate {
+	if id != nil {
+		_c = _c.SetPetsID(*id)
+	}
+	return _c
+}
+
+// SetPets sets the "pets" edge to the Pet entity.
+func (_c *UserCreate) SetPets(v *Pet) *UserCreate {
+	return _c.SetPetsID(v.ID)
+}
+
+// AddFriendIDs adds the "friends" edge to the User entity by IDs.
+func (_c *UserCreate) AddFriendIDs(ids ...int) *UserCreate {
+	_c.mutation.AddFriendIDs(ids...)
+	return _c
+}
+
+// AddFriends adds the "friends" edges to the User entity.
+func (_c *UserCreate) AddFriends(v ...*User) *UserCreate {
+	ids := make([]int, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _c.AddFriendIDs(ids...)
+}
+
+// Mutation returns the UserMutation object of the builder.
+func (_c *UserCreate) Mutation() *UserMutation {
+	return _c.mutation
+}
+
+// Save creates the User in the database.
+func (_c *UserCreate) Save(ctx context.Context) (*User, error) {
+	_c.defaults()
+	return withHooks(ctx, _c.sqlSave, _c.mutation, _c.hooks)
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (_c *UserCreate) SaveX(ctx context.Context) *User {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *UserCreate) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *UserCreate) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// defaults sets the default values of the builder before save.
+func (_c *UserCreate) defaults() {
+	if _, ok := _c.mutation.MixedString(); !ok {
+		v := user.DefaultMixedString
+		_c.mutation.SetMixedString(v)
+	}
+	if _, ok := _c.mutation.MixedEnum(); !ok {
+		v := user.DefaultMixedEnum
+		_c.mutation.SetMixedEnum(v)
+	}
+	if _, ok := _c.mutation.Active(); !ok {
+		v := user.DefaultActive
+		_c.mutation.SetActive(v)
+	}
+	if _, ok := _c.mutation.Phone(); !ok {
+		v := user.DefaultPhone
+		_c.mutation.SetPhone(v)
+	}
+	if _, ok := _c.mutation.Buffer(); !ok {
+		v := user.DefaultBuffer()
+		_c.mutation.SetBuffer(v)
+	}
+	if _, ok := _c.mutation.Title(); !ok {
+		v := user.DefaultTitle
+		_c.mutation.SetTitle(v)
+	}
+	if _, ok := _c.mutation.NewToken(); !ok {
+		v := user.DefaultNewToken()
+		_c.mutation.SetNewToken(v)
+	}
+	if _, ok := _c.mutation.State(); !ok {
+		v := user.DefaultState
+		_c.mutation.SetState(v)
+	}
+	if _, ok := _c.mutation.CreatedAt(); !ok {
+		v := user.DefaultCreatedAt()
+		_c.mutation.SetCreatedAt(v)
+	}
+	if _, ok := _c.mutation.DropOptional(); !ok {
+		v := user.DefaultDropOptional()
+		_c.mutation.SetDropOptional(v)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_c *UserCreate) check() error {
+	if _, ok := _c.mutation.MixedString(); !ok {
+		return &ValidationError{Name: "mixed_string", err: errors.New(`entv2: missing required field "User.mixed_string"`)}
+	}
+	if _, ok := _c.mutation.MixedEnum(); !ok {
+		return &ValidationError{Name: "mixed_enum", err: errors.New(`entv2: missing required field "User.mixed_enum"`)}
+	}
+	if v, ok := _c.mutation.MixedEnum(); ok {
+		if err := user.MixedEnumValidator(v); err != nil {
+			return &ValidationError{Name: "mixed_enum", err: fmt.Errorf(`entv2: validator failed for field "User.mixed_enum": %w`, err)}
+		}
+	}
+	if _, ok := _c.mutation.Active(); !ok {
+		return &ValidationError{Name: "active", err: errors.New(`entv2: missing required field "User.active"`)}
+	}
+	if _, ok := _c.mutation.Age(); !ok {
+		return &ValidationError{Name: "age", err: errors.New(`entv2: missing required field "User.age"`)}
+	}
+	if _, ok := _c.mutation.Name(); !ok {
+		return &ValidationError{Name: "name", err: errors.New(`entv2: missing required field "User.name"`)}
+	}
+	if _, ok := _c.mutation.Nickname(); !ok {
+		return &ValidationError{Name: "nickname", err: errors.New(`entv2: missing required field "User.nickname"`)}
+	}
+	if v, ok := _c.mutation.Nickname(); ok {
+		if err := user.NicknameValidator(v); err != nil {
+			return &ValidationError{Name: "nickname", err: fmt.Errorf(`entv2: validator failed for field "User.nickname": %w`, err)}
+		}
+	}
+	if _, ok := _c.mutation.Phone(); !ok {
+		return &ValidationError{Name: "phone", err: errors.New(`entv2: missing required field "User.phone"`)}
+	}
+	if _, ok := _c.mutation.Title(); !ok {
+		return &ValidationError{Name: "title", err: errors.New(`entv2: missing required field "User.title"`)}
+	}
+	if _, ok := _c.mutation.NewToken(); !ok {
+		return &ValidationError{Name: "new_token", err: errors.New(`entv2: missing required field "User.new_token"`)}
+	}
+	if v, ok := _c.mutation.Blob(); ok {
+		if err := user.BlobValidator(v); err != nil {
+			return &ValidationError{Name: "blob", err: fmt.Errorf(`entv2: validator failed for field "User.blob": %w`, err)}
+		}
+	}
+	if v, ok := _c.mutation.State(); ok {
+		if err := user.StateValidator(v); err != nil {
+			return &ValidationError{Name: "state", err: fmt.Errorf(`entv2: validator failed for field "User.state": %w`, err)}
+		}
+	}
+	if v, ok := _c.mutation.Status(); ok {
+		if err := user.StatusValidator(v); err != nil {
+			return &ValidationError{Name: "status", err: fmt.Errorf(`entv2: validator failed for field "User.status": %w`, err)}
+		}
+	}
+	if _, ok := _c.mutation.CreatedAt(); !ok {
+		return &ValidationError{Name: "created_at", err: errors.New(`entv2: missing required field "User.created_at"`)}
+	}
+	if _, ok := _c.mutation.DropOptional(); !ok {
+		return &ValidationError{Name: "drop_optional", err: errors.New(`entv2: missing required field "User.drop_optional"`)}
+	}
+	return nil
+}
+
+func (_c *UserCreate) sqlSave(ctx context.Context) (*User, error) {
+	if err := _c.check(); err != nil {
+		return nil, err
+	}
+	_node, _spec := _c.createSpec()
+	if err := sqlgraph.CreateNode(ctx, _c.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	if _spec.ID.Value != _node.ID {
+		id := _spec.ID.Value.(int64)
+		_node.ID = int(id)
+	}
+	_c.mutation.id = &_node.ID
+	_c.mutation.done = true
+	return _node, nil
+}
+
+func (_c *UserCreate) createSpec() (*User, *sqlgraph.CreateSpec) {
+	var (
+		_node = &User{config: _c.config}
+		_spec = sqlgraph.NewCreateSpec(user.Table, sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt))
+	)
+	if id, ok := _c.mutation.ID(); ok {
+		_node.ID = id
+		_spec.ID.Value = id
+	}
+	if value, ok := _c.mutation.MixedString(); ok {
+		_spec.SetField(user.FieldMixedString, field.TypeString, value)
+		_node.MixedString = value
+	}
+	if value, ok := _c.mutation.MixedEnum(); ok {
+		_spec.SetField(user.FieldMixedEnum, field.TypeEnum, value)
+		_node.MixedEnum = value
+	}
+	if value, ok := _c.mutation.Active(); ok {
+		_spec.SetField(user.FieldActive, field.TypeBool, value)
+		_node.Active = value
+	}
+	if value, ok := _c.mutation.Age(); ok {
+		_spec.SetField(user.FieldAge, field.TypeInt, value)
+		_node.Age = value
+	}
+	if value, ok := _c.mutation.Name(); ok {
+		_spec.SetField(user.FieldName, field.TypeString, value)
+		_node.Name = value
+	}
+	if value, ok := _c.mutation.Description(); ok {
+		_spec.SetField(user.FieldDescription, field.TypeString, value)
+		_node.Description = value
+	}
+	if value, ok := _c.mutation.Nickname(); ok {
+		_spec.SetField(user.FieldNickname, field.TypeString, value)
+		_node.Nickname = value
+	}
+	if value, ok := _c.mutation.Phone(); ok {
+		_spec.SetField(user.FieldPhone, field.TypeString, value)
+		_node.Phone = value
+	}
+	if value, ok := _c.mutation.Buffer(); ok {
+		_spec.SetField(user.FieldBuffer, field.TypeBytes, value)
+		_node.Buffer = value
+	}
+	if value, ok := _c.mutation.Title(); ok {
+		_spec.SetField(user.FieldTitle, field.TypeString, value)
+		_node.Title = value
+	}
+	if value, ok := _c.mutation.NewName(); ok {
+		_spec.SetField(user.FieldNewName, field.TypeString, value)
+		_node.NewName = value
+	}
+	if value, ok := _c.mutation.NewToken(); ok {
+		_spec.SetField(user.FieldNewToken, field.TypeString, value)
+		_node.NewToken = value
+	}
+	if value, ok := _c.mutation.Blob(); ok {
+		_spec.SetField(user.FieldBlob, field.TypeBytes, value)
+		_node.Blob = value
+	}
+	if value, ok := _c.mutation.State(); ok {
+		_spec.SetField(user.FieldState, field.TypeEnum, value)
+		_node.State = value
+	}
+	if value, ok := _c.mutation.Status(); ok {
+		_spec.SetField(user.FieldStatus, field.TypeEnum, value)
+		_node.Status = value
+	}
+	if value, ok := _c.mutation.Workplace(); ok {
+		_spec.SetField(user.FieldWorkplace, field.TypeString, value)
+		_node.Workplace = value
+	}
+	if value, ok := _c.mutation.Roles(); ok {
+		_spec.SetField(user.FieldRoles, field.TypeJSON, value)
+		_node.Roles = value
+	}
+	if value, ok := _c.mutation.DefaultExpr(); ok {
+		_spec.SetField(user.FieldDefaultExpr, field.TypeString, value)
+		_node.DefaultExpr = value
+	}
+	if value, ok := _c.mutation.DefaultExprs(); ok {
+		_spec.SetField(user.FieldDefaultExprs, field.TypeString, value)
+		_node.DefaultExprs = value
+	}
+	if value, ok := _c.mutation.CreatedAt(); ok {
+		_spec.SetField(user.FieldCreatedAt, field.TypeTime, value)
+		_node.CreatedAt = value
+	}
+	if value, ok := _c.mutation.DropOptional(); ok {
+		_spec.SetField(user.FieldDropOptional, field.TypeString, value)
+		_node.DropOptional = value
+	}
+	if nodes := _c.mutation.CarIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   user.CarTable,
+			Columns: []string{user.CarColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(car.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges = append(_spec.Edges, edge)
+	}
+	if nodes := _c.mutation.PetsIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2O,
+			Inverse: false,
+			Table:   user.PetsTable,
+			Columns: []string{user.PetsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(pet.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges = append(_spec.Edges, edge)
+	}
+	if nodes := _c.mutation.FriendsIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2M,
+			Inverse: false,
+			Table:   user.FriendsTable,
+			Columns: user.FriendsPrimaryKey,
+			Bidi:    true,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges = append(_spec.Edges, edge)
+	}
+	return _node, _spec
+}
+
+// UserCreateBulk is the builder for creating many User entities in bulk.
+type UserCreateBulk struct {
+	config
+	err      error
+	builders []*UserCreate
+}
+
+// Save creates the User entities in the database.
+func (_c *UserCreateBulk) Save(ctx context.Context) ([]*User, error) {
+	if _c.err != nil {
+		return nil, _c.err
+	}
+	specs := make([]*sqlgraph.CreateSpec, len(_c.builders))
+	nodes := make([]*User, len(_c.builders))
+	mutators := make([]Mutator, len(_c.builders))
+	for i := range _c.builders {
+		func(i int, root context.Context) {
+			builder := _c.builders[i]
+			builder.defaults()
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*UserMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				var err error
+				nodes[i], specs[i] = builder.createSpec()
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, _c.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, _c.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{msg: err.Error(), wrap: err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				if specs[i].ID.Value != nil && nodes[i].ID == 0 {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int(id)
+				}
+				mutation.done = true
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, _c.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_c *UserCreateBulk) SaveX(ctx context.Context) []*User {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *UserCreateBulk) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *UserCreateBulk) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/user_delete.go

@@ -0,0 +1,92 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// UserDelete is the builder for deleting a User entity.
+type UserDelete struct {
+	config
+	hooks    []Hook
+	mutation *UserMutation
+}
+
+// Where appends a list predicates to the UserDelete builder.
+func (_d *UserDelete) Where(ps ...predicate.User) *UserDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *UserDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *UserDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *UserDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(user.Table, sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt))
+	if ps := _d.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// UserDeleteOne is the builder for deleting a single User entity.
+type UserDeleteOne struct {
+	_d *UserDelete
+}
+
+// Where appends a list predicates to the UserDelete builder.
+func (_d *UserDeleteOne) Where(ps ...predicate.User) *UserDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *UserDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{user.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *UserDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/user_query.go

@@ -0,0 +1,791 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"database/sql/driver"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/car"
+	"entgo.io/ent/entc/integration/migrate/entv2/pet"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/user"
+	"entgo.io/ent/schema/field"
+)
+
+// UserQuery is the builder for querying User entities.
+type UserQuery struct {
+	config
+	ctx         *QueryContext
+	order       []user.OrderOption
+	inters      []Interceptor
+	predicates  []predicate.User
+	withCar     *CarQuery
+	withPets    *PetQuery
+	withFriends *UserQuery
+	withFKs     bool
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the UserQuery builder.
+func (_q *UserQuery) Where(ps ...predicate.User) *UserQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *UserQuery) Limit(limit int) *UserQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *UserQuery) Offset(offset int) *UserQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *UserQuery) Unique(unique bool) *UserQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *UserQuery) Order(o ...user.OrderOption) *UserQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// QueryCar chains the current query on the "car" edge.
+func (_q *UserQuery) QueryCar() *CarQuery {
+	query := (&CarClient{config: _q.config}).Query()
+	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
+		if err := _q.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		selector := _q.sqlQuery(ctx)
+		if err := selector.Err(); err != nil {
+			return nil, err
+		}
+		step := sqlgraph.NewStep(
+			sqlgraph.From(user.Table, user.FieldID, selector),
+			sqlgraph.To(car.Table, car.FieldID),
+			sqlgraph.Edge(sqlgraph.O2M, false, user.CarTable, user.CarColumn),
+		)
+		fromU = sqlgraph.SetNeighbors(_q.driver.Dialect(), step)
+		return fromU, nil
+	}
+	return query
+}
+
+// QueryPets chains the current query on the "pets" edge.
+func (_q *UserQuery) QueryPets() *PetQuery {
+	query := (&PetClient{config: _q.config}).Query()
+	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
+		if err := _q.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		selector := _q.sqlQuery(ctx)
+		if err := selector.Err(); err != nil {
+			return nil, err
+		}
+		step := sqlgraph.NewStep(
+			sqlgraph.From(user.Table, user.FieldID, selector),
+			sqlgraph.To(pet.Table, pet.FieldID),
+			sqlgraph.Edge(sqlgraph.O2O, false, user.PetsTable, user.PetsColumn),
+		)
+		fromU = sqlgraph.SetNeighbors(_q.driver.Dialect(), step)
+		return fromU, nil
+	}
+	return query
+}
+
+// QueryFriends chains the current query on the "friends" edge.
+func (_q *UserQuery) QueryFriends() *UserQuery {
+	query := (&UserClient{config: _q.config}).Query()
+	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
+		if err := _q.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		selector := _q.sqlQuery(ctx)
+		if err := selector.Err(); err != nil {
+			return nil, err
+		}
+		step := sqlgraph.NewStep(
+			sqlgraph.From(user.Table, user.FieldID, selector),
+			sqlgraph.To(user.Table, user.FieldID),
+			sqlgraph.Edge(sqlgraph.M2M, false, user.FriendsTable, user.FriendsPrimaryKey...),
+		)
+		fromU = sqlgraph.SetNeighbors(_q.driver.Dialect(), step)
+		return fromU, nil
+	}
+	return query
+}
+
+// First returns the first User entity from the query.
+// Returns a *NotFoundError when no User was found.
+func (_q *UserQuery) First(ctx context.Context) (*User, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{user.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *UserQuery) FirstX(ctx context.Context) *User {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first User ID from the query.
+// Returns a *NotFoundError when no User ID was found.
+func (_q *UserQuery) FirstID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{user.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *UserQuery) FirstIDX(ctx context.Context) int {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single User entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one User entity is found.
+// Returns a *NotFoundError when no User entities are found.
+func (_q *UserQuery) Only(ctx context.Context) (*User, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{user.Label}
+	default:
+		return nil, &NotSingularError{user.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *UserQuery) OnlyX(ctx context.Context) *User {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only User ID in the query.
+// Returns a *NotSingularError when more than one User ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *UserQuery) OnlyID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{user.Label}
+	default:
+		err = &NotSingularError{user.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *UserQuery) OnlyIDX(ctx context.Context) int {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of Users.
+func (_q *UserQuery) All(ctx context.Context) ([]*User, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*User, *UserQuery]()
+	return withInterceptors[[]*User](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *UserQuery) AllX(ctx context.Context) []*User {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of User IDs.
+func (_q *UserQuery) IDs(ctx context.Context) (ids []int, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(user.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *UserQuery) IDsX(ctx context.Context) []int {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *UserQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*UserQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *UserQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *UserQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("entv2: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *UserQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the UserQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *UserQuery) Clone() *UserQuery {
+	if _q == nil {
+		return nil
+	}
+	return &UserQuery{
+		config:      _q.config,
+		ctx:         _q.ctx.Clone(),
+		order:       append([]user.OrderOption{}, _q.order...),
+		inters:      append([]Interceptor{}, _q.inters...),
+		predicates:  append([]predicate.User{}, _q.predicates...),
+		withCar:     _q.withCar.Clone(),
+		withPets:    _q.withPets.Clone(),
+		withFriends: _q.withFriends.Clone(),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// WithCar tells the query-builder to eager-load the nodes that are connected to
+// the "car" edge. The optional arguments are used to configure the query builder of the edge.
+func (_q *UserQuery) WithCar(opts ...func(*CarQuery)) *UserQuery {
+	query := (&CarClient{config: _q.config}).Query()
+	for _, opt := range opts {
+		opt(query)
+	}
+	_q.withCar = query
+	return _q
+}
+
+// WithPets tells the query-builder to eager-load the nodes that are connected to
+// the "pets" edge. The optional arguments are used to configure the query builder of the edge.
+func (_q *UserQuery) WithPets(opts ...func(*PetQuery)) *UserQuery {
+	query := (&PetClient{config: _q.config}).Query()
+	for _, opt := range opts {
+		opt(query)
+	}
+	_q.withPets = query
+	return _q
+}
+
+// WithFriends tells the query-builder to eager-load the nodes that are connected to
+// the "friends" edge. The optional arguments are used to configure the query builder of the edge.
+func (_q *UserQuery) WithFriends(opts ...func(*UserQuery)) *UserQuery {
+	query := (&UserClient{config: _q.config}).Query()
+	for _, opt := range opts {
+		opt(query)
+	}
+	_q.withFriends = query
+	return _q
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		MixedString string `json:"mixed_string,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.User.Query().
+//		GroupBy(user.FieldMixedString).
+//		Aggregate(entv2.Count()).
+//		Scan(ctx, &v)
+func (_q *UserQuery) GroupBy(field string, fields ...string) *UserGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &UserGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = user.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		MixedString string `json:"mixed_string,omitempty"`
+//	}
+//
+//	client.User.Query().
+//		Select(user.FieldMixedString).
+//		Scan(ctx, &v)
+func (_q *UserQuery) Select(fields ...string) *UserSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &UserSelect{UserQuery: _q}
+	sbuild.label = user.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a UserSelect configured with the given aggregations.
+func (_q *UserQuery) Aggregate(fns ...AggregateFunc) *UserSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *UserQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("entv2: uninitialized interceptor (forgotten import entv2/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !user.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *UserQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*User, error) {
+	var (
+		nodes       = []*User{}
+		withFKs     = _q.withFKs
+		_spec       = _q.querySpec()
+		loadedTypes = [3]bool{
+			_q.withCar != nil,
+			_q.withPets != nil,
+			_q.withFriends != nil,
+		}
+	)
+	if withFKs {
+		_spec.Node.Columns = append(_spec.Node.Columns, user.ForeignKeys...)
+	}
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*User).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &User{config: _q.config}
+		nodes = append(nodes, node)
+		node.Edges.loadedTypes = loadedTypes
+		return node.assignValues(columns, values)
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	if query := _q.withCar; query != nil {
+		if err := _q.loadCar(ctx, query, nodes,
+			func(n *User) { n.Edges.Car = []*Car{} },
+			func(n *User, e *Car) { n.Edges.Car = append(n.Edges.Car, e) }); err != nil {
+			return nil, err
+		}
+	}
+	if query := _q.withPets; query != nil {
+		if err := _q.loadPets(ctx, query, nodes, nil,
+			func(n *User, e *Pet) { n.Edges.Pets = e }); err != nil {
+			return nil, err
+		}
+	}
+	if query := _q.withFriends; query != nil {
+		if err := _q.loadFriends(ctx, query, nodes,
+			func(n *User) { n.Edges.Friends = []*User{} },
+			func(n *User, e *User) { n.Edges.Friends = append(n.Edges.Friends, e) }); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+func (_q *UserQuery) loadCar(ctx context.Context, query *CarQuery, nodes []*User, init func(*User), assign func(*User, *Car)) error {
+	fks := make([]driver.Value, 0, len(nodes))
+	nodeids := make(map[int]*User)
+	for i := range nodes {
+		fks = append(fks, nodes[i].ID)
+		nodeids[nodes[i].ID] = nodes[i]
+		if init != nil {
+			init(nodes[i])
+		}
+	}
+	query.withFKs = true
+	query.Where(predicate.Car(func(s *sql.Selector) {
+		s.Where(sql.InValues(s.C(user.CarColumn), fks...))
+	}))
+	neighbors, err := query.All(ctx)
+	if err != nil {
+		return err
+	}
+	for _, n := range neighbors {
+		fk := n.user_car
+		if fk == nil {
+			return fmt.Errorf(`foreign-key "user_car" is nil for node %v`, n.ID)
+		}
+		node, ok := nodeids[*fk]
+		if !ok {
+			return fmt.Errorf(`unexpected referenced foreign-key "user_car" returned %v for node %v`, *fk, n.ID)
+		}
+		assign(node, n)
+	}
+	return nil
+}
+func (_q *UserQuery) loadPets(ctx context.Context, query *PetQuery, nodes []*User, init func(*User), assign func(*User, *Pet)) error {
+	fks := make([]driver.Value, 0, len(nodes))
+	nodeids := make(map[int]*User)
+	for i := range nodes {
+		fks = append(fks, nodes[i].ID)
+		nodeids[nodes[i].ID] = nodes[i]
+	}
+	query.withFKs = true
+	query.Where(predicate.Pet(func(s *sql.Selector) {
+		s.Where(sql.InValues(s.C(user.PetsColumn), fks...))
+	}))
+	neighbors, err := query.All(ctx)
+	if err != nil {
+		return err
+	}
+	for _, n := range neighbors {
+		fk := n.owner_id
+		if fk == nil {
+			return fmt.Errorf(`foreign-key "owner_id" is nil for node %v`, n.ID)
+		}
+		node, ok := nodeids[*fk]
+		if !ok {
+			return fmt.Errorf(`unexpected referenced foreign-key "owner_id" returned %v for node %v`, *fk, n.ID)
+		}
+		assign(node, n)
+	}
+	return nil
+}
+func (_q *UserQuery) loadFriends(ctx context.Context, query *UserQuery, nodes []*User, init func(*User), assign func(*User, *User)) error {
+	edgeIDs := make([]driver.Value, len(nodes))
+	byID := make(map[int]*User)
+	nids := make(map[int]map[*User]struct{})
+	for i, node := range nodes {
+		edgeIDs[i] = node.ID
+		byID[node.ID] = node
+		if init != nil {
+			init(node)
+		}
+	}
+	query.Where(func(s *sql.Selector) {
+		joinT := sql.Table(user.FriendsTable)
+		s.Join(joinT).On(s.C(user.FieldID), joinT.C(user.FriendsPrimaryKey[1]))
+		s.Where(sql.InValues(joinT.C(user.FriendsPrimaryKey[0]), edgeIDs...))
+		columns := s.SelectedColumns()
+		s.Select(joinT.C(user.FriendsPrimaryKey[0]))
+		s.AppendSelect(columns...)
+		s.SetDistinct(false)
+	})
+	if err := query.prepareQuery(ctx); err != nil {
+		return err
+	}
+	qr := QuerierFunc(func(ctx context.Context, q Query) (Value, error) {
+		return query.sqlAll(ctx, func(_ context.Context, spec *sqlgraph.QuerySpec) {
+			assign := spec.Assign
+			values := spec.ScanValues
+			spec.ScanValues = func(columns []string) ([]any, error) {
+				values, err := values(columns[1:])
+				if err != nil {
+					return nil, err
+				}
+				return append([]any{new(sql.NullInt64)}, values...), nil
+			}
+			spec.Assign = func(columns []string, values []any) error {
+				outValue := int(values[0].(*sql.NullInt64).Int64)
+				inValue := int(values[1].(*sql.NullInt64).Int64)
+				if nids[inValue] == nil {
+					nids[inValue] = map[*User]struct{}{byID[outValue]: {}}
+					return assign(columns[1:], values[1:])
+				}
+				nids[inValue][byID[outValue]] = struct{}{}
+				return nil
+			}
+		})
+	})
+	neighbors, err := withInterceptors[[]*User](ctx, query, qr, query.inters)
+	if err != nil {
+		return err
+	}
+	for _, n := range neighbors {
+		nodes, ok := nids[n.ID]
+		if !ok {
+			return fmt.Errorf(`unexpected "friends" node returned %v`, n.ID)
+		}
+		for kn := range nodes {
+			assign(kn, n)
+		}
+	}
+	return nil
+}
+
+func (_q *UserQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *UserQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(user.Table, user.Columns, sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, user.FieldID)
+		for i := range fields {
+			if fields[i] != user.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *UserQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(user.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = user.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// UserGroupBy is the group-by builder for User entities.
+type UserGroupBy struct {
+	selector
+	build *UserQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *UserGroupBy) Aggregate(fns ...AggregateFunc) *UserGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *UserGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*UserQuery, *UserGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *UserGroupBy) sqlScan(ctx context.Context, root *UserQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// UserSelect is the builder for selecting fields of User entities.
+type UserSelect struct {
+	*UserQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *UserSelect) Aggregate(fns ...AggregateFunc) *UserSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *UserSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*UserQuery, *UserSelect](ctx, _s.UserQuery, _s, _s.inters, v)
+}
+
+func (_s *UserSelect) sqlScan(ctx context.Context, root *UserQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

entc/integration/migrate/entv2/zoo.go

@@ -0,0 +1,95 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"fmt"
+	"strings"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/zoo"
+)
+
+// Zoo is the model entity for the Zoo schema.
+type Zoo struct {
+	config
+	// ID of the ent.
+	ID           int `json:"id,omitempty"`
+	selectValues sql.SelectValues
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*Zoo) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case zoo.FieldID:
+			values[i] = new(sql.NullInt64)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the Zoo fields.
+func (_m *Zoo) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case zoo.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int(value.Int64)
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the Zoo.
+// This includes values selected through modifiers, order, etc.
+func (_m *Zoo) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// Update returns a builder for updating this Zoo.
+// Note that you need to call Zoo.Unwrap() before calling this method if this Zoo
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *Zoo) Update() *ZooUpdateOne {
+	return NewZooClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the Zoo entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *Zoo) Unwrap() *Zoo {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("entv2: Zoo is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *Zoo) String() string {
+	var builder strings.Builder
+	builder.WriteString("Zoo(")
+	builder.WriteString(fmt.Sprintf("id=%v", _m.ID))
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// Zoos is a parsable slice of Zoo.
+type Zoos []*Zoo

entc/integration/migrate/entv2/zoo/mutation.go

@@ -0,0 +1,192 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package zoo
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// Mutation represents an operation that mutates the Zoo nodes in the graph.
+type Mutation struct {
+	op            ent.Op
+	typ           string
+	clearedFields map[string]struct{}
+	predicates    []predicate.Zoo
+}
+
+// NewMutation creates a new Mutation for the Zoo entity.
+func NewMutation(op ent.Op) *Mutation {
+	return &Mutation{
+		op:            op,
+		typ:           "Zoo",
+		clearedFields: make(map[string]struct{}),
+	}
+}
+
+// Predicates returns the list of predicates set on the mutation.
+func (m *Mutation) Predicates() []predicate.Zoo {
+	return m.predicates
+}
+
+// Where appends a list predicates to the Mutation builder.
+func (m *Mutation) Where(ps ...predicate.Zoo) {
+	m.predicates = append(m.predicates, ps...)
+}
+
+// WhereP appends storage-level predicates to the Mutation builder. Using this method,
+// users can use type-assertion to append predicates that do not depend on any generated package.
+func (m *Mutation) WhereP(ps ...func(*sql.Selector)) {
+	p := make([]predicate.Zoo, len(ps))
+	for i := range ps {
+		p[i] = ps[i]
+	}
+	m.Where(p...)
+}
+
+// Op returns the operation name.
+func (m *Mutation) Op() ent.Op {
+	return m.op
+}
+
+// SetOp allows setting the mutation operation.
+func (m *Mutation) SetOp(op ent.Op) {
+	m.op = op
+}
+
+// Type returns the node type of this mutation (Zoo).
+func (m *Mutation) Type() string {
+	return m.typ
+}
+
+// Fields returns all fields that were changed during this mutation. Note that in
+// order to get all numeric fields that were incremented/decremented, call
+// AddedFields().
+func (m *Mutation) Fields() []string {
+	fields := make([]string, 0, 0)
+	return fields
+}
+
+// Field returns the value of a field with the given name. The second boolean
+// return value indicates that this field was not set, or was not defined in the
+// schema.
+func (m *Mutation) Field(name string) (ent.Value, bool) {
+	return nil, false
+}
+
+// OldField returns the old value of the field from the database. An error is
+// returned if the mutation operation is not UpdateOne, or the query to the
+// database failed.
+func (m *Mutation) OldField(ctx context.Context, name string) (ent.Value, error) {
+	return nil, fmt.Errorf("unknown Zoo field %s", name)
+}
+
+// SetField sets the value of a field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) SetField(name string, value ent.Value) error {
+	switch name {
+	}
+	return fmt.Errorf("unknown Zoo field %s", name)
+}
+
+// AddedFields returns all numeric fields that were incremented/decremented during
+// this mutation.
+func (m *Mutation) AddedFields() []string {
+	return nil
+}
+
+// AddedField returns the numeric value that was incremented/decremented on a field
+// with the given name. The second boolean return value indicates that this field
+// was not set, or was not defined in the schema.
+func (m *Mutation) AddedField(name string) (ent.Value, bool) {
+	return nil, false
+}
+
+// AddField adds the value to the field with the given name. It returns an error if
+// the field is not defined in the schema, or if the type mismatched the field
+// type.
+func (m *Mutation) AddField(name string, value ent.Value) error {
+	return fmt.Errorf("unknown Zoo numeric field %s", name)
+}
+
+// ClearedFields returns all nullable fields that were cleared during this
+// mutation.
+func (m *Mutation) ClearedFields() []string {
+	return nil
+}
+
+// FieldCleared returns a boolean indicating if a field with the given name was
+// cleared in this mutation.
+func (m *Mutation) FieldCleared(name string) bool {
+	_, ok := m.clearedFields[name]
+	return ok
+}
+
+// ClearField clears the value of the field with the given name. It returns an
+// error if the field is not defined in the schema.
+func (m *Mutation) ClearField(name string) error {
+	return fmt.Errorf("unknown Zoo nullable field %s", name)
+}
+
+// ResetField resets all changes in the mutation for the field with the given name.
+// It returns an error if the field is not defined in the schema.
+func (m *Mutation) ResetField(name string) error {
+	return fmt.Errorf("unknown Zoo field %s", name)
+}
+
+// AddedEdges returns all edge names that were set/added in this mutation.
+func (m *Mutation) AddedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// AddedIDs returns all IDs (to other nodes) that were added for the given edge
+// name in this mutation.
+func (m *Mutation) AddedIDs(name string) []ent.Value {
+	return nil
+}
+
+// RemovedEdges returns all edge names that were removed in this mutation.
+func (m *Mutation) RemovedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
+// the given name in this mutation.
+func (m *Mutation) RemovedIDs(name string) []ent.Value {
+	return nil
+}
+
+// ClearedEdges returns all edge names that were cleared in this mutation.
+func (m *Mutation) ClearedEdges() []string {
+	edges := make([]string, 0, 0)
+	return edges
+}
+
+// EdgeCleared returns a boolean which indicates if the edge with the given name
+// was cleared in this mutation.
+func (m *Mutation) EdgeCleared(name string) bool {
+	return false
+}
+
+// ClearEdge clears the value of the edge with the given name. It returns an error
+// if that edge is not defined in the schema.
+func (m *Mutation) ClearEdge(name string) error {
+	return fmt.Errorf("unknown Zoo unique edge %s", name)
+}
+
+// ResetEdge resets all changes to the edge with the given name in this mutation.
+// It returns an error if the edge is not defined in the schema.
+func (m *Mutation) ResetEdge(name string) error {
+	return fmt.Errorf("unknown Zoo edge %s", name)
+}

entc/integration/migrate/entv2/zoo/where.go

@@ -0,0 +1,72 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package zoo
+
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int) predicate.Zoo {
+	return predicate.Zoo(sql.FieldEQ(FieldID, id))
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int) predicate.Zoo {
+	return predicate.Zoo(sql.FieldEQ(FieldID, id))
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int) predicate.Zoo {
+	return predicate.Zoo(sql.FieldNEQ(FieldID, id))
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int) predicate.Zoo {
+	return predicate.Zoo(sql.FieldIn(FieldID, ids...))
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int) predicate.Zoo {
+	return predicate.Zoo(sql.FieldNotIn(FieldID, ids...))
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int) predicate.Zoo {
+	return predicate.Zoo(sql.FieldGT(FieldID, id))
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int) predicate.Zoo {
+	return predicate.Zoo(sql.FieldGTE(FieldID, id))
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int) predicate.Zoo {
+	return predicate.Zoo(sql.FieldLT(FieldID, id))
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int) predicate.Zoo {
+	return predicate.Zoo(sql.FieldLTE(FieldID, id))
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.Zoo) predicate.Zoo {
+	return predicate.Zoo(sql.AndPredicates(predicates...))
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.Zoo) predicate.Zoo {
+	return predicate.Zoo(sql.OrPredicates(predicates...))
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.Zoo) predicate.Zoo {
+	return predicate.Zoo(sql.NotPredicates(p))
+}

entc/integration/migrate/entv2/zoo/zoo.go

@@ -0,0 +1,43 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package zoo
+
+import (
+	"entgo.io/ent/dialect/sql"
+)
+
+const (
+	// Label holds the string label denoting the zoo type in the database.
+	Label = "zoo"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// Table holds the table name of the zoo in the database.
+	Table = "zoos"
+)
+
+// Columns holds all SQL columns for zoo fields.
+var Columns = []string{
+	FieldID,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+// OrderOption defines the ordering options for the Zoo queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}

entc/integration/migrate/entv2/zoo_create.go

@@ -0,0 +1,185 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/zoo"
+	"entgo.io/ent/schema/field"
+)
+
+// ZooCreate is the builder for creating a Zoo entity.
+type ZooCreate struct {
+	config
+	mutation *ZooMutation
+	hooks    []Hook
+}
+
+// SetID sets the "id" field.
+func (_c *ZooCreate) SetID(v int) *ZooCreate {
+	_c.mutation.SetID(v)
+	return _c
+}
+
+// Mutation returns the ZooMutation object of the builder.
+func (_c *ZooCreate) Mutation() *ZooMutation {
+	return _c.mutation
+}
+
+// Save creates the Zoo in the database.
+func (_c *ZooCreate) Save(ctx context.Context) (*Zoo, error) {
+	return withHooks(ctx, _c.sqlSave, _c.mutation, _c.hooks)
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (_c *ZooCreate) SaveX(ctx context.Context) *Zoo {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *ZooCreate) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *ZooCreate) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_c *ZooCreate) check() error {
+	return nil
+}
+
+func (_c *ZooCreate) sqlSave(ctx context.Context) (*Zoo, error) {
+	if err := _c.check(); err != nil {
+		return nil, err
+	}
+	_node, _spec := _c.createSpec()
+	if err := sqlgraph.CreateNode(ctx, _c.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	if _spec.ID.Value != _node.ID {
+		id := _spec.ID.Value.(int64)
+		_node.ID = int(id)
+	}
+	_c.mutation.id = &_node.ID
+	_c.mutation.done = true
+	return _node, nil
+}
+
+func (_c *ZooCreate) createSpec() (*Zoo, *sqlgraph.CreateSpec) {
+	var (
+		_node = &Zoo{config: _c.config}
+		_spec = sqlgraph.NewCreateSpec(zoo.Table, sqlgraph.NewFieldSpec(zoo.FieldID, field.TypeInt))
+	)
+	if id, ok := _c.mutation.ID(); ok {
+		_node.ID = id
+		_spec.ID.Value = id
+	}
+	return _node, _spec
+}
+
+// ZooCreateBulk is the builder for creating many Zoo entities in bulk.
+type ZooCreateBulk struct {
+	config
+	err      error
+	builders []*ZooCreate
+}
+
+// Save creates the Zoo entities in the database.
+func (_c *ZooCreateBulk) Save(ctx context.Context) ([]*Zoo, error) {
+	if _c.err != nil {
+		return nil, _c.err
+	}
+	specs := make([]*sqlgraph.CreateSpec, len(_c.builders))
+	nodes := make([]*Zoo, len(_c.builders))
+	mutators := make([]Mutator, len(_c.builders))
+	for i := range _c.builders {
+		func(i int, root context.Context) {
+			builder := _c.builders[i]
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*ZooMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				var err error
+				nodes[i], specs[i] = builder.createSpec()
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, _c.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, _c.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{msg: err.Error(), wrap: err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				if specs[i].ID.Value != nil && nodes[i].ID == 0 {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int(id)
+				}
+				mutation.done = true
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, _c.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_c *ZooCreateBulk) SaveX(ctx context.Context) []*Zoo {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *ZooCreateBulk) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *ZooCreateBulk) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/zoo_delete.go

@@ -0,0 +1,92 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/zoo"
+	"entgo.io/ent/schema/field"
+)
+
+// ZooDelete is the builder for deleting a Zoo entity.
+type ZooDelete struct {
+	config
+	hooks    []Hook
+	mutation *ZooMutation
+}
+
+// Where appends a list predicates to the ZooDelete builder.
+func (_d *ZooDelete) Where(ps ...predicate.Zoo) *ZooDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *ZooDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *ZooDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *ZooDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(zoo.Table, sqlgraph.NewFieldSpec(zoo.FieldID, field.TypeInt))
+	if ps := _d.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// ZooDeleteOne is the builder for deleting a single Zoo entity.
+type ZooDeleteOne struct {
+	_d *ZooDelete
+}
+
+// Where appends a list predicates to the ZooDelete builder.
+func (_d *ZooDeleteOne) Where(ps ...predicate.Zoo) *ZooDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *ZooDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{zoo.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *ZooDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

entc/integration/migrate/entv2/zoo_query.go

@@ -0,0 +1,509 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/zoo"
+	"entgo.io/ent/schema/field"
+)
+
+// ZooQuery is the builder for querying Zoo entities.
+type ZooQuery struct {
+	config
+	ctx        *QueryContext
+	order      []zoo.OrderOption
+	inters     []Interceptor
+	predicates []predicate.Zoo
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the ZooQuery builder.
+func (_q *ZooQuery) Where(ps ...predicate.Zoo) *ZooQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *ZooQuery) Limit(limit int) *ZooQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *ZooQuery) Offset(offset int) *ZooQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *ZooQuery) Unique(unique bool) *ZooQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *ZooQuery) Order(o ...zoo.OrderOption) *ZooQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// First returns the first Zoo entity from the query.
+// Returns a *NotFoundError when no Zoo was found.
+func (_q *ZooQuery) First(ctx context.Context) (*Zoo, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{zoo.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *ZooQuery) FirstX(ctx context.Context) *Zoo {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first Zoo ID from the query.
+// Returns a *NotFoundError when no Zoo ID was found.
+func (_q *ZooQuery) FirstID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{zoo.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *ZooQuery) FirstIDX(ctx context.Context) int {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single Zoo entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one Zoo entity is found.
+// Returns a *NotFoundError when no Zoo entities are found.
+func (_q *ZooQuery) Only(ctx context.Context) (*Zoo, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{zoo.Label}
+	default:
+		return nil, &NotSingularError{zoo.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *ZooQuery) OnlyX(ctx context.Context) *Zoo {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only Zoo ID in the query.
+// Returns a *NotSingularError when more than one Zoo ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *ZooQuery) OnlyID(ctx context.Context) (id int, err error) {
+	var ids []int
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{zoo.Label}
+	default:
+		err = &NotSingularError{zoo.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *ZooQuery) OnlyIDX(ctx context.Context) int {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of Zoos.
+func (_q *ZooQuery) All(ctx context.Context) ([]*Zoo, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*Zoo, *ZooQuery]()
+	return withInterceptors[[]*Zoo](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *ZooQuery) AllX(ctx context.Context) []*Zoo {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of Zoo IDs.
+func (_q *ZooQuery) IDs(ctx context.Context) (ids []int, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(zoo.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *ZooQuery) IDsX(ctx context.Context) []int {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *ZooQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*ZooQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *ZooQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *ZooQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("entv2: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *ZooQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the ZooQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *ZooQuery) Clone() *ZooQuery {
+	if _q == nil {
+		return nil
+	}
+	return &ZooQuery{
+		config:     _q.config,
+		ctx:        _q.ctx.Clone(),
+		order:      append([]zoo.OrderOption{}, _q.order...),
+		inters:     append([]Interceptor{}, _q.inters...),
+		predicates: append([]predicate.Zoo{}, _q.predicates...),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+func (_q *ZooQuery) GroupBy(field string, fields ...string) *ZooGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &ZooGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = zoo.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+func (_q *ZooQuery) Select(fields ...string) *ZooSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &ZooSelect{ZooQuery: _q}
+	sbuild.label = zoo.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a ZooSelect configured with the given aggregations.
+func (_q *ZooQuery) Aggregate(fns ...AggregateFunc) *ZooSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *ZooQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("entv2: uninitialized interceptor (forgotten import entv2/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !zoo.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *ZooQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Zoo, error) {
+	var (
+		nodes = []*Zoo{}
+		_spec = _q.querySpec()
+	)
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*Zoo).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &Zoo{config: _q.config}
+		nodes = append(nodes, node)
+		return node.assignValues(columns, values)
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	return nodes, nil
+}
+
+func (_q *ZooQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *ZooQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(zoo.Table, zoo.Columns, sqlgraph.NewFieldSpec(zoo.FieldID, field.TypeInt))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, zoo.FieldID)
+		for i := range fields {
+			if fields[i] != zoo.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *ZooQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(zoo.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = zoo.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// ZooGroupBy is the group-by builder for Zoo entities.
+type ZooGroupBy struct {
+	selector
+	build *ZooQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *ZooGroupBy) Aggregate(fns ...AggregateFunc) *ZooGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *ZooGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*ZooQuery, *ZooGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *ZooGroupBy) sqlScan(ctx context.Context, root *ZooQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// ZooSelect is the builder for selecting fields of Zoo entities.
+type ZooSelect struct {
+	*ZooQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *ZooSelect) Aggregate(fns ...AggregateFunc) *ZooSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *ZooSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*ZooQuery, *ZooSelect](ctx, _s.ZooQuery, _s, _s.inters, v)
+}
+
+func (_s *ZooSelect) sqlScan(ctx context.Context, root *ZooQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

entc/integration/migrate/entv2/zoo_update.go

@@ -0,0 +1,179 @@
+// Copyright 2019-present Facebook Inc. All rights reserved.
+// This source code is licensed under the Apache 2.0 license found
+// in the LICENSE file in the root directory of this source tree.
+
+// Code generated by ent, DO NOT EDIT.
+
+package entv2
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/entc/integration/migrate/entv2/predicate"
+	"entgo.io/ent/entc/integration/migrate/entv2/zoo"
+	"entgo.io/ent/schema/field"
+)
+
+// ZooUpdate is the builder for updating Zoo entities.
+type ZooUpdate struct {
+	config
+	hooks    []Hook
+	mutation *ZooMutation
+}
+
+// Where appends a list predicates to the ZooUpdate builder.
+func (_u *ZooUpdate) Where(ps ...predicate.Zoo) *ZooUpdate {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Mutation returns the ZooMutation object of the builder.
+func (_u *ZooUpdate) Mutation() *ZooMutation {
+	return _u.mutation
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (_u *ZooUpdate) Save(ctx context.Context) (int, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *ZooUpdate) SaveX(ctx context.Context) int {
+	affected, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (_u *ZooUpdate) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *ZooUpdate) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *ZooUpdate) sqlSave(ctx context.Context) (_node int, err error) {
+	_spec := sqlgraph.NewUpdateSpec(zoo.Table, zoo.Columns, sqlgraph.NewFieldSpec(zoo.FieldID, field.TypeInt))
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{zoo.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return 0, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}
+
+// ZooUpdateOne is the builder for updating a single Zoo entity.
+type ZooUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *ZooMutation
+}
+
+// Mutation returns the ZooMutation object of the builder.
+func (_u *ZooUpdateOne) Mutation() *ZooMutation {
+	return _u.mutation
+}
+
+// Where appends a list predicates to the ZooUpdate builder.
+func (_u *ZooUpdateOne) Where(ps ...predicate.Zoo) *ZooUpdateOne {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (_u *ZooUpdateOne) Select(field string, fields ...string) *ZooUpdateOne {
+	_u.fields = append([]string{field}, fields...)
+	return _u
+}
+
+// Save executes the query and returns the updated Zoo entity.
+func (_u *ZooUpdateOne) Save(ctx context.Context) (*Zoo, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *ZooUpdateOne) SaveX(ctx context.Context) *Zoo {
+	node, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (_u *ZooUpdateOne) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *ZooUpdateOne) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+func (_u *ZooUpdateOne) sqlSave(ctx context.Context) (_node *Zoo, err error) {
+	_spec := sqlgraph.NewUpdateSpec(zoo.Table, zoo.Columns, sqlgraph.NewFieldSpec(zoo.FieldID, field.TypeInt))
+	id, ok := _u.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "id", err: errors.New(`entv2: missing "Zoo.id" for update`)}
+	}
+	_spec.Node.ID.Value = id
+	if fields := _u.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, zoo.FieldID)
+		for _, f := range fields {
+			if !zoo.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("entv2: invalid field %q for query", f)}
+			}
+			if f != zoo.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := _u.mutation.Predicates(); len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	_node = &Zoo{config: _u.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{zoo.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}