5 Commits

Author	SHA1	Message	Date
Oleksandr Byelkin	7aa09a5ed2	MDEV-10141: Add support for INTERSECT (and common parts for EXCEPT) ... MDEV-10140: Add support for EXCEPT	2017-03-13 12:07:47 +01:00
Sergei Golubchik	180065ebb0	Item::print(): remove redundant parentheses ... by introducing new Item::precedence() method and using it to decide whether parentheses are required	2016-12-12 20:44:41 +01:00
unknown	39afdcddd1	MDEV-5401: Wrong result (missing row) on a 2nd execution of PS with exists_to_in=on, MERGE view or a SELECT SQ ... The problem was that the view substitute its fields (on prepare) with reverting the change after execution. After prepare on optimization exists2in convertion substituted arguments of '=' with constsnt '1', but then one of the arguments of '=' was reverted to the view field reference.This lead to incorrect WHERE condition on the second execution. To fix the problem we replace whole '=' with '1' permannently.	2014-04-10 12:14:18 +03:00
Sergei Golubchik	993ea79f2d	5.5 merge	2013-03-27 23:41:02 +01:00
unknown	e3ac306157	[NOT] EXISTS to IN transformation.	2013-02-26 01:20:17 +02:00