题解 | #牛客每个人最近的登录日期(二)#
牛客每个人最近的登录日期(二)
http://www.nowcoder.com/practice/7cc3c814329546e89e71bb45c805c9ad
select u.name u_n,c.name c_n,t.d
from login l
right join (select user_id,max(date) d from login group by user_id) t
on t.user_id = l.user_id and t.d = l.date
join user u on u.id = l.user_id
join client c on c.id = l.client_id
order by u.name asc;
