Sergei Petrunia 2087d47aae MDEV-22462: Item_in_subselect::create_single_in_to_exists_cond(JOIN *, Item **, Item **): Assertion `false' failed. ...

Item_in_subselect::create_single_in_to_exists_cond() should handle the
case where the subquery is a table-less select but it is not a result
of a UNION.

(Table-less subqueries like "(SELECT 1)" are "substituted" with their select
list, but table-less subqueries with WHERE or HAVING clause, like
"(SELECT 1 WHERE ...)" are not substituted. They are handled with regular
execution path)

2021-05-21 17:46:48 +03:00

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