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(distinct uid) as level_cnt
from
user_info
where uid in(
select
a.uid
from
exam_record as a
inner join examination_info as b
on a.exam_id=b.exam_id
where
score>80
and tag = 'SQL'
and submit_time is not null
)
group by level
order by level_cnt desc,level desc
