CREATE TABLE /*_*/categorylinks_tmp (
  cl_from INTEGER UNSIGNED DEFAULT 0 NOT NULL,
  cl_to BLOB DEFAULT '' NOT NULL,
  cl_sortkey BLOB DEFAULT '' NOT NULL,
  cl_sortkey_prefix BLOB DEFAULT '' NOT NULL,
  cl_timestamp DATETIME NOT NULL,
  cl_collation BLOB DEFAULT '' NOT NULL,
  cl_type TEXT DEFAULT 'page' NOT NULL,
  PRIMARY KEY(cl_from, cl_to)
);


INSERT INTO /*_*/categorylinks_tmp (cl_from, cl_to, cl_sortkey, cl_sortkey_prefix, cl_timestamp, cl_collation, cl_type)
	SELECT cl_from, cl_to, cl_sortkey, cl_sortkey_prefix, cl_timestamp, cl_collation, cl_type
		FROM /*_*/categorylinks;
DROP TABLE /*_*/categorylinks;
ALTER TABLE /*_*/categorylinks_tmp RENAME TO /*_*/categorylinks;


CREATE INDEX cl_sortkey ON /*_*/categorylinks (
  cl_to, cl_type, cl_sortkey, cl_from
);

CREATE INDEX cl_timestamp ON /*_*/categorylinks (cl_to, cl_timestamp);

CREATE INDEX cl_collation_ext ON /*_*/categorylinks (
  cl_collation, cl_to, cl_type, cl_from
);