题解 | #浙大不同难度题目的正确率#
浙大不同难度题目的正确率
https://www.nowcoder.com/practice/d8a4f7b1ded04948b5435a45f03ead8c
select
qd.difficult_level
,sum(if(qpd.result='right',1,0))/sum(if(qpd.result is not null,1,0))
from question_practice_detail qpd
left join user_profile u on qpd.device_id = u.device_id
left join question_detail qd on qpd.question_id = qd.question_id
where u.university='浙江大学'
group by 1
order by 2
查看16道真题和解析
