题解 | #浙江大学用户题目回答情况#
浙江大学用户题目回答情况
https://www.nowcoder.com/practice/55f3d94c3f4d47b69833b335867c06c1
select a.device_id,a.question_id,a.result
from question_practice_detail as a join user_profile as b on a.device_id=b.device_id
where university= '浙江大学'
order by question_id;
连接选device_id，不然就只有七行，筛选不出三条数据
