题解 | #牛客每个人最近的登录日期(一)#
牛客每个人最近的登录日期(一)
https://www.nowcoder.com/practice/ca274ebe6eac40ab9c33ced3f2223bb2
select user_id, max(date) id from login group by user_id order by user_id
- 考察group by
- 注意最近日期用max
牛客每个人最近的登录日期(一)
https://www.nowcoder.com/practice/ca274ebe6eac40ab9c33ced3f2223bb2
select user_id, max(date) id from login group by user_id order by user_id
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