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
with t1 as(
select u1.uid, e1.exam_id,score,tag,level from exam_record e1
left join examination_info e2
on e1.exam_id =e2.exam_id
left join user_info u1
on u1.uid =e1.uid
where tag = 'SQL' and score>80
)
select level,count(1) level_cnt from t1
group by level
order by level_cnt desc
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