题解 | 推荐内容准确的用户平均评分
推荐内容准确的用户平均评分
https://www.nowcoder.com/practice/2dcac73b647247f0aef0b261ed76b47e
with right_hobby_l as (select max(score) score from recommend_tb r left join user_action_tb u on r.rec_user = u.user_id where rec_info_l = hobby_l group by r.rec_user) select avg(score) from right_hobby_l
