SET FOREIGN_KEY_CHECKS = 0;
UPDATE Tickets SET id = 1 WHERE id = 136;
UPDATE Messages SET ticketId = 1 WHERE ticketId = 136;
UPDATE Tickets SET id = 2 WHERE id = 137;
UPDATE Messages SET ticketId = 2 WHERE ticketId = 137;
ALTER TABLE Tickets AUTO_INCREMENT = 3;
SET FOREIGN_KEY_CHECKS = 1;