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)
http://www.nowcoder.com/practice/ca274ebe6eac40ab9c33ced3f2223bb2
根据user_id分组汇总,选出user_id和date的最大值,并按user_id排序
select user_id, max(date) as d from login
group by user_id
order by user_id
牛客每个人最近的登录日期(一)
http://www.nowcoder.com/practice/ca274ebe6eac40ab9c33ced3f2223bb2
根据user_id分组汇总,选出user_id和date的最大值,并按user_id排序
select user_id, max(date) as d from login
group by user_id
order by user_id
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