题解 | #查询用户刷题日期和下一次刷题日期#
查询用户刷题日期和下一次刷题日期
https://www.nowcoder.com/practice/fed7ebf4254240fdb6a2c963996ee8ff
SELECT
user_id,
date,
LEAD(date,1,'None') -- 返回当前行后一行数据
OVER(PARTITION BY user_id ORDER BY date)
AS nextdate
FROM questions_pass_record
ORDER BY user_id
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