3 commits

Author	SHA1	Message	Date
timour@askmonty.org	afed809297	MDEV-5123 Remove duplicated conditions pushed both to join_tab->select_cond and join_tab->cache_select->cond for blocked joins. ... BNL and BNLH joins pre-filter the records from a joined table via JOIN_TAB::cache_select->cond. There is no need to re-evaluate the same conditions via JOIN_TAB::select_cond. This patch removes the duplicated conditions from the top-level conjuncts of each pushed condition. The added "Using where" in few EXPLAINs is due to taking into account tab->cache_select->cond in addition to tab->select_cond in JOIN::save_explain_data_intern.	2013-10-18 11:45:25 +03:00
unknown	ecbd868f58	Merged the implementation of MDEV-28 LIMIT ROWS EXAMINED into MariaDB 5.5.	2012-03-12 00:45:18 +02:00
unknown	8aebd44e0e	Implementation of MDEV-28 LIMIT ROWS EXAMINED ... https://mariadb.atlassian.net/browse/MDEV-28 This task implements a new clause LIMIT ROWS EXAMINED <num> as an extention to the ANSI LIMIT clause. This extension allows to limit the number of rows and/or keys a query would access (read and/or write) during query execution.	2012-03-11 14:39:20 +02:00