SELECT name
,t
FROM user
u
RIGHT JOIN
(SELECT user_id,SUM(grade_num) OVER (PARTITION BY user_id) t
FROM grade_info
ORDER BY t DESC
LIMIT 1) a
ON u.id = a.user_id
ORDER BY t DESC
SELECT name
,t
FROM user
u
RIGHT JOIN
(SELECT user_id,SUM(grade_num) OVER (PARTITION BY user_id) t
FROM grade_info
ORDER BY t DESC
LIMIT 1) a
ON u.id = a.user_id
ORDER BY t DESC