greenplumn CLogicalLeftAntiSemiJoinNotIn 代码
文件路径：/src/backend/gporca/libgpopt/src/operators/CLogicalLeftAntiSemiJoinNotIn.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2013 EMC Corp.
/
/ @filename:
/ CLogicalLeftAntiSemiJoinNotIn.cpp
/
/ @doc:
/ Implementation of left anti semi join operator
/---------------------------------------------------------------------------
#include "gpopt/operators/CLogicalLeftAntiSemiJoinNotIn.h"
#include "gpos/base.h"
#include "gpopt/base/CColRefSet.h"
#include "gpopt/operators/CExpression.h"
#include "gpopt/operators/CExpressionHandle.h"
using namespace gpopt;
/---------------------------------------------------------------------------
/ @function:
/ CLogicalLeftAntiSemiJoinNotIn::CLogicalLeftAntiSemiJoinNotIn
/
/ @doc:
/ ctor
/
/---------------------------------------------------------------------------
CLogicalLeftAntiSemiJoinNotIn::CLogicalLeftAntiSemiJoinNotIn(
CMemoryPool *mp, CXform::EXformId origin_xform)
: CLogicalLeftAntiSemiJoin(mp, origin_xform)
{
GPOS_ASSERT(nullptr != mp);
}
/---------------------------------------------------------------------------
/ @function:
/ CLogicalLeftAntiSemiJoinNotIn::PxfsCandidates
/
/ @doc:
/ Get candidate xforms
/
/---------------------------------------------------------------------------
CXformSet *
CLogicalLeftAntiSemiJoinNotIn::PxfsCandidates(CMemoryPool *mp) const
{
CXformSet *xform_set = GPOS_NEW(mp) CXformSet(mp);
(void) xform_set->ExchangeSet(
CXform::ExfAntiSemiJoinNotInAntiSemiJoinNotInSwap);
(void) xform_set->ExchangeSet(CXform::ExfAntiSemiJoinNotInAntiSemiJoinSwap);
(void) xform_set->ExchangeSet(CXform::ExfAntiSemiJoinNotInSemiJoinSwap);
(void) xform_set->ExchangeSet(CXform::ExfAntiSemiJoinNotInInnerJoinSwap);
(void) xform_set->ExchangeSet(
CXform::ExfLeftAntiSemiJoinNotIn2CrossProduct);
(void) xform_set->ExchangeSet(CXform::ExfLeftAntiSemiJoinNotIn2NLJoinNotIn);
(void) xform_set->ExchangeSet(
CXform::ExfLeftAntiSemiJoinNotIn2HashJoinNotIn);
return xform_set;
}
/ EOF
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