greenplumn CXformSelect2Apply 代码
文件路径：/src/backend/gporca/libgpopt/src/xforms/CXformSelect2Apply.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2011 EMC Corp.
/
/ @filename:
/ CXformSelect2Apply.cpp
/
/ @doc:
/ Implementation of Select to Apply transform
/---------------------------------------------------------------------------
#include "gpopt/xforms/CXformSelect2Apply.h"
#include "gpos/base.h"
#include "gpopt/operators/CLogicalSelect.h"
#include "gpopt/operators/CPatternLeaf.h"
using namespace gpopt;
/---------------------------------------------------------------------------
/ @function:
/ CXformSelect2Apply::CXformSelect2Apply
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CXformSelect2Apply::CXformSelect2Apply(CMemoryPool *mp)
: / pattern
CXformSubqueryUnnest(GPOS_NEW(mp) CExpression(
mp, GPOS_NEW(mp) CLogicalSelect(mp),
GPOS_NEW(mp) CExpression(
mp, GPOS_NEW(mp) CPatternLeaf(mp)), / relational child
GPOS_NEW(mp)
CExpression(mp, GPOS_NEW(mp) CPatternTree(mp)) / predicate tree
))
{
}
/ EOF
相关信息
相关文章
greenplumn CJoinOrderGreedy 源码
greenplumn CJoinOrderMinCard 源码
greenplumn CSubqueryHandler 源码