greenplumn CXformGbAggDedup2HashAggDedup 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/xforms/CXformGbAggDedup2HashAggDedup.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2013 VMware, Inc. or its affiliates.
/
/ @filename:
/ CXformGbAggDedup2HashAggDedup.h
/
/ @doc:
/ Transform GbAggDeduplicate to HashAggDeduplicate
/---------------------------------------------------------------------------
#ifndef GPOPT_CXformGbAggDedup2HashAggDedup_H
#define GPOPT_CXformGbAggDedup2HashAggDedup_H
#include "gpos/base.h"
#include "gpopt/xforms/CXformGbAgg2HashAgg.h"
namespace gpopt
{
using namespace gpos;
/---------------------------------------------------------------------------
/ @class:
/ CXformGbAggDedup2HashAggDedup
/
/ @doc:
/ Transform GbAggDeduplicate to HashAggDeduplicate
/
/---------------------------------------------------------------------------
class CXformGbAggDedup2HashAggDedup : public CXformGbAgg2HashAgg
{
private:
public:
CXformGbAggDedup2HashAggDedup(const CXformGbAggDedup2HashAggDedup &) =
delete;
/ ctor
CXformGbAggDedup2HashAggDedup(CMemoryPool *mp);
/ dtor
~CXformGbAggDedup2HashAggDedup() override = default;
/ ident accessors
EXformId
Exfid() const override
{
return ExfGbAggDedup2HashAggDedup;
}
/ return a string for xform name
const CHAR *
SzId() const override
{
return "CXformGbAggDedup2HashAggDedup";
}
/ actual transform
void Transform(CXformContext *pxfctxt, CXformResult *pxfres,
CExpression *pexpr) const override;
}; / class CXformGbAggDedup2HashAggDedup
} / namespace gpopt
#endif / !GPOPT_CXformGbAggDedup2HashAggDedup_H
/ EOF
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