greenplumn CLogicalLeftAntiSemiJoinNotIn 源码
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
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