}
	}

	switch beginner := tx.Statement.ConnPool.(type) {
	case TxBeginner:
		tx.Statement.ConnPool, err = beginner.BeginTx(ctx, opt)
	case ConnPoolBeginner:
		tx.Statement.ConnPool, err = beginner.BeginTx(ctx, opt)
	default:
		err = ErrInvalidTransaction
	}

	if err != nil {
		tx.AddError(err)
	}

	return tx
}