drop table if exists gh_ost_test; create table gh_ost_test ( id int unsigned auto_increment, i int not null, ts0 timestamp default current_timestamp, ts1 timestamp, dt2 datetime, t datetime, updated tinyint unsigned default 0, primary key(id, t), key i_idx(i) ) 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, 7, null, now(), now(), '2010-10-20 10:20:30', 0); insert into gh_ost_test values (null, 11, null, now(), now(), '2010-10-20 10:20:30', 0); update gh_ost_test set dt2=now() + interval 1 minute, updated = 1 where i = 11 order by id desc limit 1; insert into gh_ost_test values (null, 13, null, now(), now(), '2010-10-20 10:20:30', 0); update gh_ost_test set t=t + interval 1 minute, updated = 1 where i = 13 order by id desc limit 1; end ;;