虽然sql不雅观，但是就要和大伙不一样，卷死大伙 select round((select count(1) from login l1 join ( select user_id, min(date) mdate from login group by user_id ) t on l1.user_id = t.user_id and l1.date = date_add(t.mdate, interval 1 day)) / (select...
