drop table if exists gh_ost_test; create table gh_ost_test ( id int auto_increment, i int not null, bi bigint not null, iu int unsigned not null, biu bigint unsigned not null, primary key(id) ) auto_increment=1; drop event if exists gh_ost_test; delimiter ;; create event gh_ost_test on schedule every 1 second starts current_timestamp ends current_timestamp + interval 60 second on completion not preserve enable do begin insert into gh_ost_test values (null, -2147483647, -9223372036854775807, 4294967295, 18446744073709551615); set @last_insert_id := cast(last_insert_id() as signed); update gh_ost_test set i=-2147483647+@last_insert_id, bi=-9223372036854775807+@last_insert_id, iu=4294967295-@last_insert_id, biu=18446744073709551615-@last_insert_id where id < @last_insert_id order by id desc limit 1; end ;;