题解 | #网易云音乐推荐(网易校招笔试真题)#
网易云音乐推荐(网易校招笔试真题)
https://www.nowcoder.com/practice/048ed413ac0e4cf4a774b906fc87e0e7
#关注用户喜欢的音乐 select mn1 music_name from (select distinct music_name mn1,m.id md from follow f left join music_likes ml on f.follower_id = ml.user_id left join music m on ml.music_id=m.id where f.user_id=1) t1 where t1.mn1 not in # 自己喜欢的音乐 (select music_name mn2 from music_likes ml left join music m on ml.music_id=m.id where ml.user_id=1) order by t1.md asc