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MCOL-4530: common conjuction top rewrite (#2673)

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Added logical transformation of the execplan::ParseTrees with the taking out the common factor in expression of the form "(A and B) or (A and C)" for the purposes of passing a TPCH 19 query.

Co-authored-by: Leonid Fedorov <leonid.fedorov@mariadb.com>
This commit is contained in:
Andrey Piskunov
2023-02-27 18:23:19 +02:00
committed by GitHub
parent 8671f55784
commit b6808c97f1
18 changed files with 6097 additions and 23 deletions
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40
dbcon/mysql/ha_mcs_execplan.cpp
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@ -63,27 +63,28 @@ using namespace logging;
#include "ha_tzinfo.h"
using namespace cal_impl_if;
#include "calpontselectexecutionplan.h"
#include "calpontsystemcatalog.h"
#include "simplecolumn_int.h"
#include "simplecolumn_uint.h"
#include "simplecolumn_decimal.h"
#include "aggregatecolumn.h"
#include "constantcolumn.h"
#include "simplefilter.h"
#include "constantfilter.h"
#include "functioncolumn.h"
#include "arithmeticcolumn.h"
#include "arithmeticoperator.h"
#include "calpontselectexecutionplan.h"
#include "calpontsystemcatalog.h"
#include "constantcolumn.h"
#include "constantfilter.h"
#include "existsfilter.h"
#include "functioncolumn.h"
#include "groupconcatcolumn.h"
#include "intervalcolumn.h"
#include "jsonarrayaggcolumn.h"
#include "logicoperator.h"
#include "outerjoinonfilter.h"
#include "predicateoperator.h"
#include "rewrites.h"
#include "rowcolumn.h"
#include "selectfilter.h"
#include "existsfilter.h"
#include "groupconcatcolumn.h"
#include "jsonarrayaggcolumn.h"
#include "outerjoinonfilter.h"
#include "intervalcolumn.h"
#include "simplecolumn_decimal.h"
#include "simplecolumn_int.h"
#include "simplecolumn_uint.h"
#include "simplefilter.h"
#include "udafcolumn.h"
using namespace execplan;
@ -7100,6 +7101,13 @@ int processWhere(SELECT_LEX& select_lex, gp_walk_info& gwi, SCSEP& csep, const s
outerJoinStack.push(ptp);
}
config::Config* cf = config::Config::makeConfig();
string rewriteEnabled = cf->getConfig("Rewrites", "CommonLeafConjunctionsToTop");
if (filters && rewriteEnabled != "OFF")
{
filters = extractCommonLeafConjunctionsToRoot(filters);
}
// Append outer join filters at the end of inner join filters.
// JLF_ExecPlanToJobList::walkTree processes ParseTree::left
// before ParseTree::right which is what we intend to do in the
@ -7119,9 +7127,6 @@ int processWhere(SELECT_LEX& select_lex, gp_walk_info& gwi, SCSEP& csep, const s
if (filters)
{
csep->filters(filters);
std::string aTmpDir(startup::StartUp::tmpDir());
aTmpDir = aTmpDir + "/filter1.dot";
filters->drawTree(aTmpDir);
}
return 0;
@ -7684,6 +7689,7 @@ int getSelectPlan(gp_walk_info& gwi, SELECT_LEX& select_lex, SCSEP& csep, bool i
case Item::CONST_ITEM:
{
switch (item->cmp_type())
{
case INT_RESULT:
case STRING_RESULT: