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Current File : /var/www/element/data/www/wiki.element.ru/maintenance/archives/patch-categorylinksindex.sql

--
-- patch-categorylinksindex.sql
--
-- Per bug 10280 / http://bugzilla.wikimedia.org/show_bug.cgi?id=10280
--
-- Improve enum continuation performance of the what pages belong to a category query
--

ALTER TABLE /*$wgDBprefix*/categorylinks
   DROP INDEX cl_sortkey,
   ADD INDEX cl_sortkey(cl_to, cl_sortkey, cl_from);