maintenance/archives/patch-user_former_groups.sql

   1 -- Stores the groups the user has once belonged to.
   2 -- The user may still belong these groups. Check user_groups.
   3 CREATE TABLE /*_*/user_former_groups (
   4   -- Key to user_id
   5   ufg_user int unsigned NOT NULL default 0,
   6   ufg_group varbinary(255) NOT NULL default ''
   7 ) /*$wgDBTableOptions*/;
   8
   9 CREATE UNIQUE INDEX /*i*/ufg_user_group ON /*_*/user_former_groups (ufg_user,ufg_group);