greenplumn CXformImplementLeftAntiSemiCorrelatedApply 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/xforms/CXformImplementLeftAntiSemiCorrelatedApply.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates..
/
/ @filename:
/ CXformImplementLeftAntiSemiCorrelatedApply.h
/
/ @doc:
/ Transform left anti semi correlated apply (for NOT EXISTS subqueries)
/ to physical left anti semi correlated join
/---------------------------------------------------------------------------
#ifndef GPOPT_CXformImplementLeftAntiSemiCorrelatedApply_H
#define GPOPT_CXformImplementLeftAntiSemiCorrelatedApply_H
#include "gpos/base.h"
#include "gpopt/operators/CLogicalLeftAntiSemiCorrelatedApply.h"
#include "gpopt/operators/CPhysicalCorrelatedLeftAntiSemiNLJoin.h"
#include "gpopt/xforms/CXformImplementCorrelatedApply.h"
namespace gpopt
{
using namespace gpos;
/-------------------------------------------------------------------------
/ @class:
/ CXformImplementLeftAntiSemiCorrelatedApply
/
/ @doc:
/ Transform left anti semi correlated apply (for NOT EXISTS subqueries)
/ to physical left anti semi correlated join
/
/-------------------------------------------------------------------------
class CXformImplementLeftAntiSemiCorrelatedApply
: public CXformImplementCorrelatedApply<
CLogicalLeftAntiSemiCorrelatedApply,
CPhysicalCorrelatedLeftAntiSemiNLJoin>
{
private:
public:
CXformImplementLeftAntiSemiCorrelatedApply(
const CXformImplementLeftAntiSemiCorrelatedApply &) = delete;
/ ctor
explicit CXformImplementLeftAntiSemiCorrelatedApply(CMemoryPool *mp)
: CXformImplementCorrelatedApply<CLogicalLeftAntiSemiCorrelatedApply,
CPhysicalCorrelatedLeftAntiSemiNLJoin>(
mp)
{
}
/ dtor
~CXformImplementLeftAntiSemiCorrelatedApply() override = default;
/ ident accessors
EXformId
Exfid() const override
{
return ExfImplementLeftAntiSemiCorrelatedApply;
}
const CHAR *
SzId() const override
{
return "CXformImplementLeftAntiSemiCorrelatedApply";
}
}; / class CXformImplementLeftAntiSemiCorrelatedApply
} / namespace gpopt
#endif / !GPOPT_CXformImplementLeftAntiSemiCorrelatedApply_H
/ EOF
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