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(level) as level_cnt from user_info where uid in (select uid from exam_record inner join examination_info on examination_info.exam_id=exam_record.exam_id where examination_info.tag='SQL' and score>80 ) group by level order by level_cnt desc;
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