maintenance/archives/patch-backlinkindexes.sql

   1 --
   2 -- patch-backlinkindexes.sql
   3 --
   4 -- Per task T8440 / https://phabricator.wikimedia.org/T8440
   5 --
   6 -- Improve performance of the "what links here"-type queries
   7 --
   8
   9 ALTER TABLE /*$wgDBprefix*/pagelinks
  10    DROP INDEX pl_namespace,
  11    ADD INDEX pl_namespace(pl_namespace, pl_title, pl_from);
  12
  13 ALTER TABLE /*$wgDBprefix*/templatelinks
  14    DROP INDEX tl_namespace,
  15    ADD INDEX tl_namespace(tl_namespace, tl_title, tl_from);
  16
  17 ALTER TABLE /*$wgDBprefix*/imagelinks
  18    DROP INDEX il_to,
  19    ADD INDEX il_to(il_to, il_from);