greenplumn CLogicalLeftAntiSemiJoinNotIn 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/operators/CLogicalLeftAntiSemiJoinNotIn.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2013 EMC Corp.
/
/ @filename:
/ CLogicalLeftAntiSemiJoinNotIn.h
/
/ @doc:
/ Left anti semi join operator with the NotIn semantics
/ 1 not in (2,3) --> true
/ 1 not in (1,2,3) --> false
/ 1 not in (null, 2) --> unknown
/ 1 not in (1, null, 2) --> false
/ null not in (1,2) --> unknown
/ null not in (empty) --> true
/ null not in (1,2,null) --> unknown
/---------------------------------------------------------------------------
#ifndef GPOS_CLogicalLeftAntiSemiJoinNotIn_H
#define GPOS_CLogicalLeftAntiSemiJoinNotIn_H
#include "gpos/base.h"
#include "gpopt/operators/CLogicalLeftAntiSemiJoin.h"
namespace gpopt
{
/---------------------------------------------------------------------------
/ @class:
/ CLogicalLeftAntiSemiJoinNotIn
/
/ @doc:
/ Left anti semi join operator with the NotIn semantics
/
/---------------------------------------------------------------------------
class CLogicalLeftAntiSemiJoinNotIn : public CLogicalLeftAntiSemiJoin
{
private:
public:
CLogicalLeftAntiSemiJoinNotIn(const CLogicalLeftAntiSemiJoinNotIn &) =
delete;
/ ctor
explicit CLogicalLeftAntiSemiJoinNotIn(
CMemoryPool *mp, CXform::EXformId origin_xform = CXform::ExfSentinel);
/ dtor
~CLogicalLeftAntiSemiJoinNotIn() override = default;
/ ident accessors
EOperatorId
Eopid() const override
{
return EopLogicalLeftAntiSemiJoinNotIn;
}
/ return a string for operator name
const CHAR *
SzId() const override
{
return "CLogicalLeftAntiSemiJoinNotIn";
}
/-------------------------------------------------------------------------------------
/ Transformations
/-------------------------------------------------------------------------------------
/ candidate set of xforms
CXformSet *PxfsCandidates(CMemoryPool *mp) const override;
/-------------------------------------------------------------------------------------
/-------------------------------------------------------------------------------------
/-------------------------------------------------------------------------------------
/ conversion function
static CLogicalLeftAntiSemiJoinNotIn *
PopConvert(COperator *pop)
{
GPOS_ASSERT(nullptr != pop);
GPOS_ASSERT(EopLogicalLeftAntiSemiJoinNotIn == pop->Eopid());
return dynamic_cast<CLogicalLeftAntiSemiJoinNotIn *>(pop);
}
}; / class CLogicalLeftAntiSemiJoinNotIn
} / namespace gpopt
#endif / !GPOS_CLogicalLeftAntiSemiJoinNotIn_H
/ EOF
相关信息
相关文章
greenplumn CExpressionFactorizer 源码
greenplumn CExpressionHandle 源码
greenplumn CExpressionPreprocessor 源码
greenplumn CExpressionUtils 源码