题解 | #作答试卷得分大于过80的人的用户等级分布#
作答试卷得分大于过80的人的用户等级分布
https://www.nowcoder.com/practice/5bc77e3a3c374ad6a92798f0ead4c744
select level, count(uid) level_cnt
from user_info
where uid in (
select uid
from exam_record
where exam_id = 9001
and score > 80
)
group by level
order by level_cnt desc;
#sql#
