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MDEV-30395 Wrong result with semijoin and Federated as outer table

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The problem was that federated engine does not support comparable rowids
which was not taken into account by semijoin code.

Fixed by checking that we don't use semijoin with tables that does not
support comparable rowids.

Other things:
- Fixed some typos in the code comments
This commit is contained in:
Monty
2023-01-12 22:31:18 +02:00
parent 0595dd0f56
commit 981a6b7044
6 changed files with 89 additions and 7 deletions
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2
sql/sql_select.cc
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@ -2309,7 +2309,7 @@ JOIN::optimize_inner()
/*
We have to remove constants and duplicates from group_list before
calling make_join_statistics() as this may call get_best_group_min_max()
which needs a simplfied group_list.
which needs a simplified group_list.
*/
if (group_list && table_count == 1)
{