database/mariadb-columnstore-engine
1
0
Fork 0
mirror of https://github.com/mariadb-corporation/mariadb-columnstore-engine.git synced 2025-07-30 19:23:07 +03:00
Code Activity

feat(optimizer): temporary shield optimizer with a session variable

Browse Source
This commit is contained in:
drrtuy
2025-06-16 16:37:03 +00:00
parent 98cb6dddee
commit e57832ee64
5 changed files with 59 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
dbcon/mysql/ha_mcs_execplan.cpp
View File

@ -9209,7 +9209,7 @@ int cs_get_derived_plan(ha_columnstore_derived_handler* handler, THD* /*thd*/, S
}
int cs_get_select_plan(ha_columnstore_select_handler* handler, THD* /*thd*/, SCSEP& csep, gp_walk_info& gwi,
int cs_get_select_plan(ha_columnstore_select_handler* handler, THD* thd, SCSEP& csep, gp_walk_info& gwi,
bool isSelectLexUnit)
{
SELECT_LEX& select_lex = handler->select_lex ? *handler->select_lex : *handler->lex_unit->first_select();
@ -9241,12 +9241,15 @@ int cs_get_select_plan(ha_columnstore_select_handler* handler, THD* /*thd*/, SCS
// Derived table projection and filter optimization.
derivedTableOptimization(&gwi, csep);
bool csepWasOptimized = optimizer::optimizeCSEP(*csep);
if (csep->traceOn() && csepWasOptimized)
if (get_unstable_optimizer(thd))
{
cerr << "---------------- cs_get_select_plan optimized EXECUTION PLAN ----------------" << endl;
cerr << *csep << endl;
cerr << "-------------- EXECUTION PLAN END --------------\n" << endl;
bool csepWasOptimized = optimizer::optimizeCSEP(*csep);
if (csep->traceOn() && csepWasOptimized)
{
cerr << "---------------- cs_get_select_plan optimized EXECUTION PLAN ----------------" << endl;
cerr << *csep << endl;
cerr << "-------------- EXECUTION PLAN END --------------\n" << endl;
}
}
return 0;