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Fixed the bug mdev-12429 and its duplicates mdev-12145 and mdev-9886.

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Also fixed a wrong result for a test case for mdev-7691
(the alternative one).
The test  cases for all these bug have materialized semi-joins used
inside dependent sub-queries.

The patch actually reverts the change inroduced by Monty in 2003.
It looks like this change is not valid anymore after the implementation
of semi-joins.
Adjusted output from EXPLAIN for many other test cases.
This commit is contained in:
Igor Babaev
2017-04-04 10:04:52 -07:00
parent a821ef7605
commit b0395d8701
15 changed files with 329 additions and 22 deletions
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2
sql/sql_select.cc
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@ -8794,7 +8794,7 @@ make_join_select(JOIN *join,SQL_SELECT *select,COND *cond)
It solve problem with select like SELECT * FROM t1 WHERE rand() > 0.5
*/
if (tab == join->join_tab + join->top_join_tab_count - 1)
current_map|= OUTER_REF_TABLE_BIT | RAND_TABLE_BIT;
current_map|= RAND_TABLE_BIT;
used_tables|=current_map;
if (tab->type == JT_REF && tab->quick &&