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
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
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