greenplumn CScalarNAryJoinPredList 源码
greenplumn CScalarNAryJoinPredList 代码
文件路径：/src/backend/gporca/libgpopt/src/operators/CScalarNAryJoinPredList.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2019 VMware, Inc. or its affiliates.
//
// @filename:
// CScalarNAryJoinPredList.cpp
//
// @doc:
// Join predicate list for NAry joins with some non-inner joins
//---------------------------------------------------------------------------
#include "gpopt/operators/CScalarNAryJoinPredList.h"
#include "gpos/base.h"
using namespace gpopt;
//---------------------------------------------------------------------------
// @function:
// CScalarNAryJoinPredList::CScalarNAryJoinPredList
//
// @doc:
// ctor
//
//---------------------------------------------------------------------------
CScalarNAryJoinPredList::CScalarNAryJoinPredList(CMemoryPool *mp) : CScalar(mp)
{
}
//---------------------------------------------------------------------------
// @function:
// CScalarNAryJoinPredList::Matches
//
// @doc:
// Match function on operator level
//
//---------------------------------------------------------------------------
BOOL
CScalarNAryJoinPredList::Matches(COperator *pop) const
{
return (pop->Eopid() == Eopid());
}
//---------------------------------------------------------------------------
// @function:
// CScalarNAryJoinPredList::FInputOrderSensitive
//
// @doc:
// Join predicate lists are sensitive to order
//
//---------------------------------------------------------------------------
BOOL
CScalarNAryJoinPredList::FInputOrderSensitive() const
{
return true;
}
// EOF
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