greenplumn CLogicalLeftAntiSemiCorrelatedApplyNotIn 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/operators/CLogicalLeftAntiSemiCorrelatedApplyNotIn.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CLogicalLeftAntiSemiCorrelatedApplyNotIn.h
/
/ @doc:
/ Logical Left Anti Semi Correlated Apply operator;
/ a variant of left anti semi apply (for ALL/NOT IN subqueries)
/ to capture the need to implement a correlated-execution strategy
/ on the physical side
/---------------------------------------------------------------------------
#ifndef GPOPT_CLogicalLeftAntiSemiCorrelatedApplyNotIn_H
#define GPOPT_CLogicalLeftAntiSemiCorrelatedApplyNotIn_H
#include "gpos/base.h"
#include "gpopt/operators/CExpressionHandle.h"
#include "gpopt/operators/CLogicalLeftAntiSemiApplyNotIn.h"
namespace gpopt
{
/---------------------------------------------------------------------------
/ @class:
/ CLogicalLeftAntiSemiCorrelatedApplyNotIn
/
/ @doc:
/ Logical Apply operator used in correlated execution of NOT IN/ALL subqueries
/
/---------------------------------------------------------------------------
class CLogicalLeftAntiSemiCorrelatedApplyNotIn
: public CLogicalLeftAntiSemiApplyNotIn
{
private:
public:
CLogicalLeftAntiSemiCorrelatedApplyNotIn(
const CLogicalLeftAntiSemiCorrelatedApplyNotIn &) = delete;
/ ctor
explicit CLogicalLeftAntiSemiCorrelatedApplyNotIn(CMemoryPool *mp)
: CLogicalLeftAntiSemiApplyNotIn(mp)
{
}
/ ctor
CLogicalLeftAntiSemiCorrelatedApplyNotIn(CMemoryPool *mp,
CColRefArray *pdrgpcrInner,
EOperatorId eopidOriginSubq)
: CLogicalLeftAntiSemiApplyNotIn(mp, pdrgpcrInner, eopidOriginSubq)
{
}
/ dtor
~CLogicalLeftAntiSemiCorrelatedApplyNotIn() override = default;
/ ident accessors
EOperatorId
Eopid() const override
{
return EopLogicalLeftAntiSemiCorrelatedApplyNotIn;
}
/ return a string for operator name
const CHAR *
SzId() const override
{
return "CLogicalLeftAntiSemiCorrelatedApplyNotIn";
}
/-------------------------------------------------------------------------------------
/ Transformations
/-------------------------------------------------------------------------------------
/ candidate set of xforms
CXformSet *PxfsCandidates(CMemoryPool *mp) const override;
/-------------------------------------------------------------------------------------
/-------------------------------------------------------------------------------------
/-------------------------------------------------------------------------------------
/ return true if operator is a correlated apply
BOOL
FCorrelated() const override
{
return true;
}
/ return a copy of the operator with remapped columns
COperator *PopCopyWithRemappedColumns(CMemoryPool *mp,
UlongToColRefMap *colref_mapping,
BOOL must_exist) override;
/ conversion function
static CLogicalLeftAntiSemiCorrelatedApplyNotIn *
PopConvert(COperator *pop)
{
GPOS_ASSERT(nullptr != pop);
GPOS_ASSERT(EopLogicalLeftAntiSemiCorrelatedApplyNotIn == pop->Eopid());
return dynamic_cast<CLogicalLeftAntiSemiCorrelatedApplyNotIn *>(pop);
}
}; / class CLogicalLeftAntiSemiCorrelatedApplyNotIn
} / namespace gpopt
#endif / !GPOPT_CLogicalLeftAntiSemiCorrelatedApplyNotIn_H
/ EOF
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