Spracherkennung für: .test vermutete Sprache: SQL {SQL[90] Lisp[47] Masm[47]} [Methode: maximale Elemente, drei Dimensionen]
#
# Run subselect.test without semi-join optimization (test materialize)
#
select @@optimizer_switch like '%materialization=on%';
set optimizer_switch='materialization=off';
set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
set join_cache_level=1;
set @join_cache_level_for_subselect_test=@@join_cache_level;
--source subselect.test
set optimizer_switch=default;
select @@optimizer_switch like '%materialization=on%';
set @join_cache_level_for_subselect_test=NULL;
[Dauer der Verarbeitung: 0.11 Sekunden, vorverarbeitet 2026-10-08]
