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
select avg(distinct score) from recommend_tb as a left join user_action_tb as b on a.rec_user = b.user_id where rec_info_l = hobby_l
推荐内容准确的用户平均评分
https://www.nowcoder.com/practice/2dcac73b647247f0aef0b261ed76b47e
select avg(distinct score) from recommend_tb as a left join user_action_tb as b on a.rec_user = b.user_id where rec_info_l = hobby_l
相关推荐