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--
-- patch-backlinkindexes.sql
--
-- Per task T8440 / https://phabricator.wikimedia.org/T8440
--
-- Improve performance of the "what links here"-type queries
--
ALTER TABLE /*$wgDBprefix*/pagelinks
DROP INDEX pl_namespace,
ADD INDEX pl_namespace(pl_namespace, pl_title, pl_from);
ALTER TABLE /*$wgDBprefix*/templatelinks
DROP INDEX tl_namespace,
ADD INDEX tl_namespace(tl_namespace, tl_title, tl_from);
ALTER TABLE /*$wgDBprefix*/imagelinks
DROP INDEX il_to,
ADD INDEX il_to(il_to, il_from);
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