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题解 | 考试分数(三)

SELECT b.id,a.name,b.score FROM language a LEFT JOIN( SELECT id,language_id,score,DENSE_RANK() OVER(partition by language_id order by score desc) ...

2025-02-14

0 55

题解 | 牛客每个人最近的登录日期(四)

SELECT date, COUNT(DISTINCT CASE WHEN (user_id,date) IN ( SELECt user_id,MIN(date) FROM login GROUP BY user_id ) ...

2025-02-11

0 61