t.Fatalf("Should find saved record, but got %v", err)
	}

	tx2.Commit()

	if err := DB.First(&User{}, "name = ?", "transaction-2").Error; err != nil {
		t.Fatalf("Should be able to find committed record, but got %v", err)
	}

	t.Run("this is test nested transaction and prepareStmt coexist case", func(t *testing.T) {
		// enable prepare statement
		tx3 := DB.Session(&gorm.Session{PrepareStmt: true})

func (db *DB) Commit() *DB {
	if committer, ok := db.Statement.ConnPool.(TxCommitter); ok && committer != nil && !reflect.ValueOf(committer).IsNil() {
		db.AddError(committer.Commit())
	} else {
		db.AddError(ErrInvalidTransaction)
	}
	return db
}

// Rollback rollbacks the changes in a transaction
func (db *DB) Rollback() *DB {
	if committer, ok := db.Statement.ConnPool.(TxCommitter); ok && committer != nil {