maintenance/archives/patch-change_tag.sql

   1 -- A table to track tags for revisions, logs and recent changes.
   2 -- Andrew Garrett, 2009-01
   3 CREATE TABLE /*_*/change_tag (
   4         ct_rc_id int NULL,
   5         ct_log_id int NULL,
   6         ct_rev_id int NULL,
   7         ct_tag varchar(255) NOT NULL,
   8         ct_params BLOB NULL
   9 ) /*$wgDBTableOptions*/;
  10
  11 CREATE UNIQUE INDEX /*i*/change_tag_rc_tag ON /*_*/change_tag (ct_rc_id,ct_tag);
  12 CREATE UNIQUE INDEX /*i*/change_tag_log_tag ON /*_*/change_tag (ct_log_id,ct_tag);
  13 CREATE UNIQUE INDEX /*i*/change_tag_rev_tag ON /*_*/change_tag (ct_rev_id,ct_tag);
  14 -- Covering index, so we can pull all the info only out of the index.
  15 CREATE INDEX /*i*/change_tag_tag_id ON /*_*/change_tag (ct_tag,ct_rc_id,ct_rev_id,ct_log_id);
  16
  17 -- Rollup table to pull a LIST of tags simply without ugly GROUP_CONCAT that only works on MySQL 4.1+
  18 CREATE TABLE /*_*/tag_summary (
  19         ts_rc_id int NULL,
  20         ts_log_id int NULL,
  21         ts_rev_id int NULL,
  22         ts_tags BLOB NOT NULL
  23 ) /*$wgDBTableOptions*/;
  24
  25 CREATE UNIQUE INDEX /*i*/tag_summary_rc_id ON /*_*/tag_summary (ts_rc_id);
  26 CREATE UNIQUE INDEX /*i*/tag_summary_log_id ON /*_*/tag_summary (ts_log_id);
  27 CREATE UNIQUE INDEX /*i*/tag_summary_rev_id ON /*_*/tag_summary (ts_rev_id);
  28
  29
  30 CREATE TABLE /*_*/valid_tag (
  31         vt_tag varchar(255) NOT NULL PRIMARY KEY
  32 ) /*$wgDBTableOptions*/;