Code:
-- work around JDBC 'A result was returned when none was expected.'
DO '
BEGIN
-- fix broken nextval due to poorly written 20140320100000_CreateAdminUserRoleTables.sql
PERFORM setval(''admin_user_role_groups_id_seq'', 1 + COALESCE(MAX(id), 0), FALSE) FROM admin_user_role_groups;
END; ';