Manual:Tag summary table

The tag_summary is used to pull a LIST of tags simply without ugly GROUP_CONCAT that only works on MySQL 4.1+

Schema
+---+-+--+-+-+---+ +---+-+--+-+-+---+ +---+-+--+-+-+---+
 * Field    | Type    | Null | Key | Default | Extra |
 * ts_rc_id | int(11) | YES  | UNI | NULL    |       |
 * ts_log_id | int(11) | YES | UNI | NULL    |       |
 * ts_rev_id | int(11) | YES | UNI | NULL    |       |
 * ts_tags  | blob    | NO   |     | NULL    |       |

ts_rc_id
rc_id for the change.

ts_log_id
log_id for the change.

ts_rev_id
rev_id for the change.

ts_tags
Comma-separated list of tags.