方法一 连表查询

select qpd.device_id,qpd.question_id,qpd.result FROM

question_practice_detail as qpd inner join user_profile as up on qpd.device_id = up.device_id

where up.university = '浙江大学'

方法二 子查询

select device_id,question_id,result FROM question_practice_detail where device_id = ( select device_id from user_profile where university = '浙江大学' )