greenplumn CScalarSubqueryAll 源码
greenplumn CScalarSubqueryAll 代码
文件路径：/src/backend/gporca/libgpopt/src/operators/CScalarSubqueryAll.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// CScalarSubqueryAll.cpp
//
// @doc:
// Implementation of scalar subquery ALL operator
//---------------------------------------------------------------------------
#include "gpopt/operators/CScalarSubqueryAll.h"
#include "gpos/base.h"
#include "gpopt/base/CUtils.h"
using namespace gpopt;
//---------------------------------------------------------------------------
// @function:
// CScalarSubqueryAll::CScalarSubqueryAll
//
// @doc:
// Ctor
//
//---------------------------------------------------------------------------
CScalarSubqueryAll::CScalarSubqueryAll(CMemoryPool *mp, IMDId *scalar_op_mdid,
const CWStringConst *pstrScalarOp,
const CColRef *colref)
: CScalarSubqueryQuantified(mp, scalar_op_mdid, pstrScalarOp, colref)
{
}
//---------------------------------------------------------------------------
// @function:
// CScalarSubqueryAll::PopCopyWithRemappedColumns
//
// @doc:
// Return a copy of the operator with remapped columns
//
//---------------------------------------------------------------------------
COperator *
CScalarSubqueryAll::PopCopyWithRemappedColumns(CMemoryPool *mp,
UlongToColRefMap *colref_mapping,
BOOL must_exist)
{
CColRef *colref = CUtils::PcrRemap(Pcr(), colref_mapping, must_exist);
IMDId *scalar_op_mdid = MdIdOp();
scalar_op_mdid->AddRef();
CWStringConst *pstrScalarOp =
GPOS_NEW(mp) CWStringConst(mp, PstrOp()->GetBuffer());
return GPOS_NEW(mp)
CScalarSubqueryAll(mp, scalar_op_mdid, pstrScalarOp, colref);
}
// EOF
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