CREATE TABLE migr_user_map ( old_user_id integer NOT NULL, new_user_id integer NOT NULL, PRIMARY KEY (old_user_id,new_user_id) ); CREATE UNIQUE INDEX migr_user_map_new_user_id_key ON migr_user_map (new_user_id); CREATE UNIQUE INDEX migr_user_map_old_user_id_key ON migr_user_map (old_user_id); -- Table size: 204,800 bytes -- Table rows: 5,539