题解 | #考试分数(三)#
考试分数(三)
https://www.nowcoder.com/practice/b83f8b0e7e934d95a56c24f047260d91
select id,name,score from (select g.id,l.name,g.score,dense_rank()over(partition by g.language_id order by g.score desc) rk from grade g inner join language l on g.language_id = l.id ) a where a.rk <= 2 order by name
