mirror of https://github.com/pressly/goose.git
43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package dialectquery
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import "fmt"
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type Postgres struct{}
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var _ Querier = (*Postgres)(nil)
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func (p *Postgres) CreateTable(tableName string) string {
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q := `CREATE TABLE %s (
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id serial NOT NULL,
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version_id bigint NOT NULL,
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is_applied boolean NOT NULL,
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tstamp timestamp NULL default now(),
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PRIMARY KEY(id)
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)`
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return fmt.Sprintf(q, tableName)
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}
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func (p *Postgres) InsertVersion(tableName string) string {
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q := `INSERT INTO %s (version_id, is_applied) VALUES ($1, $2)`
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return fmt.Sprintf(q, tableName)
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}
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func (p *Postgres) DeleteVersion(tableName string) string {
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q := `DELETE FROM %s WHERE version_id=$1`
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return fmt.Sprintf(q, tableName)
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}
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func (p *Postgres) GetMigrationByVersion(tableName string) string {
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q := `SELECT tstamp, is_applied FROM %s WHERE version_id=$1 ORDER BY tstamp DESC LIMIT 1`
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return fmt.Sprintf(q, tableName)
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}
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func (p *Postgres) ListMigrations(tableName string) string {
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q := `SELECT version_id, is_applied from %s ORDER BY id DESC`
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return fmt.Sprintf(q, tableName)
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}
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func (p *Postgres) TableExists(_ string) string {
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return `SELECT EXISTS ( SELECT FROM pg_tables WHERE tablename = $1)`
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}
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