题解 | #浙江大学用户题目回答情况#

select 
    question_practice_detail.device_id,
    question_practice_detail.question_id,
    question_practice_detail.result
from question_practice_detail
inner join user_profile
on user_profile.university = "浙江大学"
and 
user_profile.device_id = question_practice_detail.device_id