题解 | 查询成绩
查询成绩
https://www.nowcoder.com/practice/ef30689ae065434c89c129e9dfe1b4cd
select count(*)
from (
select sid, avg(score) avg_score
from SC
group by sid
) t
where avg_score>60
查询成绩
https://www.nowcoder.com/practice/ef30689ae065434c89c129e9dfe1b4cd
select count(*)
from (
select sid, avg(score) avg_score
from SC
group by sid
) t
where avg_score>60
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