greenplumn CPhysicalLeftOuterNLJoin 源码
greenplumn CPhysicalLeftOuterNLJoin 代码
文件路径:/src/backend/gporca/libgpopt/include/gpopt/operators/CPhysicalLeftOuterNLJoin.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2011 EMC Corp.
//
// @filename:
// CPhysicalLeftOuterNLJoin.h
//
// @doc:
// Left outer nested-loops join operator
//---------------------------------------------------------------------------
#ifndef GPOPT_CPhysicalLeftOuterNLJoin_H
#define GPOPT_CPhysicalLeftOuterNLJoin_H
#include "gpos/base.h"
#include "gpopt/operators/CPhysicalNLJoin.h"
namespace gpopt
{
//---------------------------------------------------------------------------
// @class:
// CPhysicalLeftOuterNLJoin
//
// @doc:
// Left outer nested-loops join operator
//
//---------------------------------------------------------------------------
class CPhysicalLeftOuterNLJoin : public CPhysicalNLJoin
{
private:
public:
CPhysicalLeftOuterNLJoin(const CPhysicalLeftOuterNLJoin &) = delete;
// ctor
explicit CPhysicalLeftOuterNLJoin(CMemoryPool *mp);
// dtor
~CPhysicalLeftOuterNLJoin() override;
// ident accessors
EOperatorId
Eopid() const override
{
return EopPhysicalLeftOuterNLJoin;
}
// return a string for operator name
const CHAR *
SzId() const override
{
return "CPhysicalLeftOuterNLJoin";
}
// conversion function
static CPhysicalLeftOuterNLJoin *
PopConvert(COperator *pop)
{
GPOS_ASSERT(EopPhysicalLeftOuterNLJoin == pop->Eopid());
return dynamic_cast<CPhysicalLeftOuterNLJoin *>(pop);
}
}; // class CPhysicalLeftOuterNLJoin
} // namespace gpopt
#endif // !GPOPT_CPhysicalLeftOuterNLJoin_H
// EOF
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