#子查询（不支持）
update question q set q.`level`=2 where in( select id from question where id>=2111 limit 165,165);
#改写
update question q inner join ( select id from question where id>=2111 limit 165,165) t on = set q.`level`=2;
#子查询（不支持）
delete from `user` where id in (
select min(id) as id from `user` group by wx_open_id having count(1)>1
);
#改写
delete from `user` where id in (
select id from(
select min(id) as id from `user` group by wx_open_id having count(1)>1
) t
);