maintenance/postgres/archives/patch-user_former_groups.sql

   1 CREATE TABLE user_former_groups (
   2   ufg_user   INTEGER      NULL  REFERENCES mwuser(user_id) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
   3   ufg_group  TEXT     NOT NULL
   4 );
   5 CREATE UNIQUE INDEX ufg_user_group ON user_former_groups (ufg_user, ufg_group);