greenplumn CPhysicalLeftAntiSemiHashJoin 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/operators/CPhysicalLeftAntiSemiHashJoin.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CPhysicalLeftAntiSemiHashJoin.h
/
/ @doc:
/ Left anti semi hash join operator
/---------------------------------------------------------------------------
#ifndef GPOPT_CPhysicalLeftAntiSemiHashJoin_H
#define GPOPT_CPhysicalLeftAntiSemiHashJoin_H
#include "gpos/base.h"
#include "gpopt/operators/CPhysicalHashJoin.h"
namespace gpopt
{
/---------------------------------------------------------------------------
/ @class:
/ CPhysicalLeftAntiSemiHashJoin
/
/ @doc:
/ Left anti semi hash join operator
/
/---------------------------------------------------------------------------
class CPhysicalLeftAntiSemiHashJoin : public CPhysicalHashJoin
{
private:
public:
CPhysicalLeftAntiSemiHashJoin(const CPhysicalLeftAntiSemiHashJoin &) =
delete;
/ ctor
CPhysicalLeftAntiSemiHashJoin(
CMemoryPool *mp, CExpressionArray *pdrgpexprOuterKeys,
CExpressionArray *pdrgpexprInnerKeys, IMdIdArray *hash_opfamilies,
CXform::EXformId origin_xform = CXform::ExfSentinel);
/ dtor
~CPhysicalLeftAntiSemiHashJoin() override;
/ ident accessors
EOperatorId
Eopid() const override
{
return EopPhysicalLeftAntiSemiHashJoin;
}
/ return a string for operator name
const CHAR *
SzId() const override
{
return "CPhysicalLeftAntiSemiHashJoin";
}
/ check if required columns are included in output columns
BOOL FProvidesReqdCols(CExpressionHandle &exprhdl, CColRefSet *pcrsRequired,
ULONG ulOptReq) const override;
/ conversion function
static CPhysicalLeftAntiSemiHashJoin *
PopConvert(COperator *pop)
{
GPOS_ASSERT(EopPhysicalLeftAntiSemiHashJoin == pop->Eopid());
return dynamic_cast<CPhysicalLeftAntiSemiHashJoin *>(pop);
}
}; / class CPhysicalLeftAntiSemiHashJoin
} / namespace gpopt
#endif / !GPOPT_CPhysicalLeftAntiSemiHashJoin_H
/ EOF
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