MySQL дата более 30 дней
SELECT * FROM my_table WHERE created_at > DATE_SUB(NOW(), INTERVAL 1 DAY)
Friendly Hawk
SELECT * FROM my_table WHERE created_at > DATE_SUB(NOW(), INTERVAL 1 DAY)mysql> delete from DemoTable where UserMessageSentDate < now() - interval 30 DAY;
Query OK, 3 rows affected (0.11 sec)