greenplumn CPhysicalRightOuterHashJoin 源码
greenplumn CPhysicalRightOuterHashJoin 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/operators/CPhysicalRightOuterHashJoin.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (c) 2020 VMware, Inc.
//
// @filename:
// CPhysicalRightOuterHashJoin.h
//
// @doc:
// Right outer hash join operator
//---------------------------------------------------------------------------
#ifndef GPOPT_CPhysicalRightOuterHashJoin_H
#define GPOPT_CPhysicalRightOuterHashJoin_H
#include "gpos/base.h"
#include "gpopt/operators/CPhysicalHashJoin.h"
namespace gpopt
{
//---------------------------------------------------------------------------
// @class:
// CPhysicalRightOuterHashJoin
//
// @doc:
// Right outer hash join operator
//
//---------------------------------------------------------------------------
class CPhysicalRightOuterHashJoin : public CPhysicalHashJoin
{
private:
protected:
// create optimization requests
void CreateOptRequests(CMemoryPool *mp) override;
public:
CPhysicalRightOuterHashJoin(const CPhysicalRightOuterHashJoin &) = delete;
// ctor
CPhysicalRightOuterHashJoin(
CMemoryPool *mp, CExpressionArray *pdrgpexprOuterKeys,
CExpressionArray *pdrgpexprInnerKeys, IMdIdArray *hash_opfamilies,
CXform::EXformId origin_xform = CXform::ExfSentinel);
// dtor
~CPhysicalRightOuterHashJoin() override;
// ident accessors
EOperatorId
Eopid() const override
{
return EopPhysicalRightOuterHashJoin;
}
// return a string for operator name
const CHAR *
SzId() const override
{
return "CPhysicalRightOuterHashJoin";
}
// conversion function
static CPhysicalRightOuterHashJoin *
PopConvert(COperator *pop)
{
GPOS_ASSERT(nullptr != pop);
GPOS_ASSERT(EopPhysicalRightOuterHashJoin == pop->Eopid());
return dynamic_cast<CPhysicalRightOuterHashJoin *>(pop);
}
//-------------------------------------------------------------------------------------
// Required Plan Properties
//-------------------------------------------------------------------------------------
// compute required distribution of the n-th child
CEnfdDistribution *Ped(CMemoryPool *mp, CExpressionHandle &exprhdl,
CReqdPropPlan *prppInput, ULONG child_index,
CDrvdPropArray *pdrgpdpCtxt,
ULONG ulOptReq) override;
}; // class CPhysicalRightOuterHashJoin
} // namespace gpopt
#endif // !GPOPT_CPhysicalRightOuterHashJoin_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
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
7、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦