Update to migration's unique key column data loss: fixing

This commit is contained in:
Shlomi Noach 2017-11-08 10:08:20 +02:00
parent 7d875b415c
commit b796a00c94

View File

@ -0,0 +1,45 @@
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, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
insert into gh_ost_test values (null, 13);
drop event if exists gh_ost_test;
delimiter ;;
create event gh_ost_test
on schedule every 1 second
starts current_timestamp + interval 3 second
ends current_timestamp + interval 60 second
on completion not preserve
enable
do
begin
update gh_ost_test set id=-2 where id=21;
end ;;