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MDEV-18467 Server crashes in fix_semijoin_strategies_for_picked_join_order

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If a splittable materialized derived table / view T is used in a inner nest
of an outer join with impossible ON condition then T is marked as a
constant table. Yet the execution plan to build T is still searched for
in spite of the fact that is not needed. So it should be set.
This commit is contained in:
Igor Babaev
2019-03-04 23:10:30 -08:00
parent a2fc36989e
commit 8f4de38f65
5 changed files with 81 additions and 6 deletions
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3
sql/sql_select.h
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@ -659,7 +659,8 @@ typedef struct st_join_table {
void add_keyuses_for_splitting();
SplM_plan_info *choose_best_splitting(double record_count,
table_map remaining_tables);
bool fix_splitting(SplM_plan_info *spl_plan, table_map remaining_tables);
bool fix_splitting(SplM_plan_info *spl_plan, table_map remaining_tables,
bool is_const_table);
} JOIN_TAB;