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3 commits

Author SHA1 Message Date
Igor Babaev
41e68e8e5b MDEV-16357 LIMIT and ORDER BY clause is ignored on a query with UNION 
when using brackets

Do not create master unit for select if it has already one.
 2018-11-06 12:07:49 -08:00
Igor Babaev
0f9efd54ce MDEV-16359 wrong result (extra rows) on the query with UNION and brackets 
Due to an obvious bug in st_select_lex_unit::reset_distinct() a union
without duplicates of more than 2 selects could return a result set
containing duplicate rows if this union was enclosed in ().
 2018-08-03 23:27:24 -07:00
Oleksandr Byelkin
de745ecf29 MDEV-11953: support of brackets in UNION/EXCEPT/INTERSECT operations 2018-07-04 19:13:55 +02:00