https://leetcode.com/problems/the-latest-login-in-2020/


```mysql
# 8:14
select user_id, max(time_stamp) as last_stamp 
FROM Logins WHERE (time_stamp >= '2020-01-01') and (time_stamp < '2021-01-01')
GROUP by user_id
# 8:15
# copy for learning
```
