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60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
package clickhouse
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import (
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"log"
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"strings"
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chast "github.com/sqlc-dev/doubleclick/ast"
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"github.com/sqlc-dev/sqlc/internal/debug"
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"github.com/sqlc-dev/sqlc/internal/sql/ast"
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)
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func todo(n chast.Node) *ast.TODO {
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if debug.Active {
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log.Printf("clickhouse.convert: Unknown node type %T\n", n)
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}
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return &ast.TODO{}
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}
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func identifier(id string) string {
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return strings.ToLower(id)
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}
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func NewIdentifier(t string) *ast.String {
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return &ast.String{Str: identifier(t)}
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}
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func parseTableName(n *chast.TableIdentifier) *ast.TableName {
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return &ast.TableName{
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Schema: identifier(n.Database),
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Name: identifier(n.Table),
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}
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}
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func parseTableIdentifierToRangeVar(n *chast.TableIdentifier) *ast.RangeVar {
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schemaname := identifier(n.Database)
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relname := identifier(n.Table)
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return &ast.RangeVar{
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Schemaname: &schemaname,
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Relname: &relname,
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}
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}
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func isNotNull(n *chast.ColumnDeclaration) bool {
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if n.Type == nil {
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return false
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}
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// Check if type is wrapped in Nullable()
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// If it's Nullable, it can be null, so return false
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// If it's not Nullable, it's NOT NULL by default in ClickHouse
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if n.Type.Name != "" && strings.ToLower(n.Type.Name) == "nullable" {
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return false
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}
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// Also check if Nullable field is explicitly set
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if n.Nullable != nil && *n.Nullable {
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return false
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}
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return true
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}
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