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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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sql/sql_select.cc
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@ -6689,6 +6689,7 @@ void set_position(JOIN *join,uint idx,JOIN_TAB *table,KEYUSE *key)
next=tmp;
}
join->best_ref[idx]=table;
join->positions[idx].spl_plan= 0;
}