--- Rollup table to pull a LIST of tags simply without ugly GROUP_CONCAT that only works on MySQL 4.1+
-CREATE TABLE /*_*/tag_summary (
- ts_rc_id int NULL,
- ts_log_id int NULL,
- ts_rev_id int NULL,
- ts_tags BLOB NOT NULL,
-
- UNIQUE KEY (ts_rc_id),
- UNIQUE KEY (ts_log_id),
- UNIQUE KEY (ts_rev_id)
-) /*$wgDBTableOptions*/;
-
-CREATE TABLE /*_*/valid_tag (
- vt_tag varchar(255) NOT NULL,
- PRIMARY KEY (vt_tag)
-) /*$wgDBTableOptions*/;
+CREATE UNIQUE INDEX /*i*/change_tag_rc_tag ON /*_*/change_tag (ct_rc_id,ct_tag);
+CREATE UNIQUE INDEX /*i*/change_tag_log_tag ON /*_*/change_tag (ct_log_id,ct_tag);
+CREATE UNIQUE INDEX /*i*/change_tag_rev_tag ON /*_*/change_tag (ct_rev_id,ct_tag);
+-- Covering index, so we can pull all the info only out of the index.
+CREATE INDEX /*i*/change_tag_tag_id ON /*_*/change_tag (ct_tag,ct_rc_id,ct_rev_id,ct_log_id);