题解 | #牛客每个人最近的登录日期(六)#
牛客每个人最近的登录日期(六)
https://www.nowcoder.com/practice/572a027e52804c058e1f8b0c5e8a65b4
select name, date, sum(number) over(partition by user_id order by date) as 'cum_cnt' from passing_number p, user u where p.user_id = u.id order by date, name