drop table if exists gh_ost_test; create table gh_ost_test ( id int auto_increment, i int not null, dt0 datetime(6), dt1 datetime(6), ts2 timestamp(6), updated tinyint unsigned default 0, primary key(id), 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, 11, now(), now(), now(), 0); update gh_ost_test set dt1='2016-10-31 11:22:33.444', updated = 1 where i = 11 order by id desc limit 1; insert into gh_ost_test values (null, 13, now(), now(), now(), 0); update gh_ost_test set ts1='2016-11-01 11:22:33.444', updated = 1 where i = 13 order by id desc limit 1; end ;;