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https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-05-08 15:01:34 +03:00
ab2003baaa
Original SH implementation sends the result set back to the client thus it can't be used in INSERT..SELECT, SELECT INTO OUTFILE,CREATE TABLE AS SELECT etc. CLX-77 feature has been backported into MDB to enable SH to run query part of the mentioned queries.
116 lines
3.4 KiB
C++
116 lines
3.4 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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Copyright (C) 2016 MariaDB Corporation
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/***********************************************************************
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* $Id: ha_select_sub.cpp 9210 2013-01-21 14:10:42Z rdempsey $
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*
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*
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***********************************************************************/
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/** class SelectSubQuery definition */
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//#define NDEBUG
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#include <my_config.h>
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#include <cassert>
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using namespace std;
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#include "idb_mysql.h"
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#include "parsetree.h"
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#include "logicoperator.h"
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#include "selectfilter.h"
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#include "simplescalarfilter.h"
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#include "predicateoperator.h"
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#include "rowcolumn.h"
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#include "simplecolumn.h"
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using namespace execplan;
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#include "errorids.h"
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using namespace logging;
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#include "ha_subquery.h"
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namespace cal_impl_if
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{
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SelectSubQuery::SelectSubQuery(gp_walk_info& gwip) : SubQuery(gwip), fSelSub (NULL)
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{}
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SelectSubQuery::SelectSubQuery(gp_walk_info& gwip, Item_subselect* selSub) :
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SubQuery(gwip),
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fSelSub(selSub)
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{}
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SelectSubQuery::~SelectSubQuery()
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{}
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SCSEP SelectSubQuery::transform()
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{
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idbassert(fSelSub);
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SCSEP csep(new CalpontSelectExecutionPlan());
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csep->sessionID(fGwip.sessionid);
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csep->subType (CalpontSelectExecutionPlan::SELECT_SUBS);
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// gwi for the sub query
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gp_walk_info gwi;
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gwi.thd = fGwip.thd;
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gwi.subQuery = this;
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// @4632 merge table list to gwi in case there is FROM sub to be referenced
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// in the SELECT sub
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gwi.derivedTbCnt = fGwip.derivedTbList.size();
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uint32_t tbCnt = fGwip.tbList.size();
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gwi.tbList.insert(gwi.tbList.begin(), fGwip.tbList.begin(), fGwip.tbList.end());
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gwi.derivedTbList.insert(gwi.derivedTbList.begin(), fGwip.derivedTbList.begin(), fGwip.derivedTbList.end());
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if (getSelectPlan(gwi, *(fSelSub->get_select_lex()), csep, false) != 0)
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{
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if (!gwi.fatalParseError)
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{
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fGwip.fatalParseError = true;
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fGwip.parseErrorText = "Error occured in SelectSubQuery::transform()";
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}
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else
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{
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fGwip.fatalParseError = gwi.fatalParseError;
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fGwip.parseErrorText = gwi.parseErrorText;
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}
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csep.reset();
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return csep;
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}
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fGwip.subselectList.push_back(csep);
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// remove outer query tables
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CalpontSelectExecutionPlan::TableList tblist;
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if (csep->tableList().size() >= tbCnt)
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tblist.insert(tblist.begin(), csep->tableList().begin() + tbCnt, csep->tableList().end());
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CalpontSelectExecutionPlan::SelectList derivedTbList;
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if (csep->derivedTableList().size() >= gwi.derivedTbCnt)
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derivedTbList.insert(derivedTbList.begin(), csep->derivedTableList().begin() + gwi.derivedTbCnt, csep->derivedTableList().end());
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csep->tableList(tblist);
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csep->derivedTableList(derivedTbList);
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return csep;
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}
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}
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