mysql 在同一个表中对具有多个科目成绩的不同学生进行排名

Question

我想根据学科以及该特定学科的总体成绩对学生进行排名。查询适用于所有主题，但是当我指定 where 子句时，我只获得 where 子句中指定的用户的排名，并且排名始终为 1 似乎它没有检查其他 id

SELECT Student_id,
    Subject,
    Total_Overal,
    RANK() OVER (PARTITION BY Subject ORDER BY Total_Overal DESC) as StudentRank
FROM exams WHERE Student_id="155676" and Subject="French";

Answer 1

因为where子句只得出一行结果，所以排名永远是1。需要在周围再添加一层SELECT：

SELECT * FROM
(SELECT Student_id,
    Subject,
    Total_Overal,
    RANK() OVER (PARTITION BY Subject ORDER BY Total_Overal DESC) as StudentRank
FROM exams) t
WHERE Student_id="155676" and Subject="French";