--- /dev/null
+--
+-- patch-categorylinks-better-collation.sql
+--
+-- Bugs 164, 1211, 23682. This is currently experimental and subject to
+-- change. You need to set $wgExperimentalCategorySort = true; to use this.
+-- You also need to manually apply any changes that are made to this file,
+-- since they will not be automatically applied. This patch is only intended
+-- to work for MySQL for now, without table prefixes, possibly other random
+-- limitations.
+ALTER TABLE categorylinks
+ ADD COLUMN cl_raw_sortkey varchar(255) binary NULL default NULL,
+ ADD COLUMN cl_collation tinyint NOT NULL default 0,
+ ADD COLUMN cl_type ENUM('page', 'subcat', 'file') NOT NULL,
+ ADD INDEX (cl_collation),
+ DROP INDEX cl_sortkey,
+ ADD INDEX cl_sortkey (cl_to, cl_type, cl_sortkey, cl_from);