drop table if exists gh_ost_test;
create table gh_ost_test (
  id int auto_increment,
  j json,
  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, '"sometext"');
  insert into gh_ost_test values (null, '{"key":"val"}');
  insert into gh_ost_test values (null, '{"is-it": true, "count": 3, "elements": []}');
end ;;