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
http://www.nowcoder.com/practice/55f3d94c3f4d47b69833b335867c06c1
select t1.device_id,question_id,result
from question_practice_detail t1
left JOIN user_profile t2
on t1.device_id = t2.device_id
where university = '浙江大学'
from question_practice_detail t1
left JOIN user_profile t2
on t1.device_id = t2.device_id
where university = '浙江大学'