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816 B
816 B
Deleting rows
CREATE TABLE authors (
id SERIAL PRIMARY KEY,
bio text NOT NULL
);
The parameter syntax varies by database engine:
PostgreSQL:
-- name: DeleteAuthor :exec
DELETE FROM authors WHERE id = $1;
MySQL and SQLite:
-- name: DeleteAuthor :exec
DELETE FROM authors WHERE id = ?;
package db
import (
"context"
"database/sql"
)
type DBTX interface {
ExecContext(context.Context, string, ...any) (sql.Result, error)
}
func New(db DBTX) *Queries {
return &Queries{db: db}
}
type Queries struct {
db DBTX
}
const deleteAuthor = `-- name: DeleteAuthor :exec
DELETE FROM authors WHERE id = $1
`
func (q *Queries) DeleteAuthor(ctx context.Context, id int) error {
_, err := q.db.ExecContext(ctx, deleteAuthor, id)
return err
}