select
    up.device_id,
    university,
    count(question_id) as question_cnt,
    sum(if (qpd.result = 'right', 1, 0)) as right_question_cnt
from
    user_profile as up
    left join question_practice_detail as qpd on up.device_id = qpd.device_id
    and month (date) = 8
where
    university = '复旦大学'
group by
    up.device_id;