/* custom error: Too many CTE iterations: 500 */
/* FIXME(YQL-20631): aggregation should be forbidden in recursive queries */
PRAGMA YqlSelect = 'force';

WITH RECURSIVE agg AS (
    SELECT CAST(1 AS Int32?) AS n
    UNION ALL
    SELECT Max(n) + 1 AS n FROM agg WHERE n < 5
)
SELECT * FROM agg;