SELECT u.device_id, university, COUNT(question_id) question_cnt, SUM(IF(LOWER(result) = 'right',1,0)) right_question_cnt FROM user_profile u LEFT JOIN question_practice_detail q ON u.device_id = q.device_id AND EXTRACT(MONTH FROM date) = '08' WHERE u.university = '复旦大学' GROUP BY u.device_id, u.unive...