drop event if exists gh_ost_test; drop table if exists gh_ost_test; create table gh_ost_test ( id int auto_increment, i int not null, primary key(id) ) auto_increment=1; insert into gh_ost_test values (NULL, 11); insert into gh_ost_test values (NULL, 13); insert into gh_ost_test values (NULL, 17); insert into gh_ost_test values (NULL, 23); insert into gh_ost_test values (NULL, 29); insert into gh_ost_test values (NULL, 31); insert into gh_ost_test values (NULL, 37); delete from gh_ost_test where id>=5;