roundDown once 10000 5000 20000 SELECT count() FROM system.numbers WHERE NOT ignore(roundDuration(rand() % 65536)) SELECT count() FROM system.numbers WHERE NOT ignore(roundDown(rand() % 65536, [0, 1, 10, 30, 60, 120, 180, 240, 300, 600, 1200, 1800, 3600, 7200, 18000, 36000])) SELECT count() FROM system.numbers WHERE NOT ignore(roundAge(rand() % 100)) SELECT count() FROM system.numbers WHERE NOT ignore(roundDown(rand() % 100, [0, 1, 18, 25, 35, 45, 55])) SELECT count() FROM system.numbers WHERE NOT ignore(roundDown(rand() % 65536, (SELECT groupArray(number) FROM numbers(65536))))