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题解 | #网易云音乐推荐(网易校招笔试真题)#

select DISTINCT music_name from (select user_id , follower_id from follow where user_id = 1 ) a, music_likes ml , music m where a.follower_id = ml.us...

Mysql

2021-09-30

1 534

题解 | #牛客的课程订单分析(一)#

select id,name,weight,total from goods , (select t.goods_id , sum(t.count) as total from trans t group by t.goods_id) ts where goods.id = ts.goods_id ...

Mysql Java

2021-09-29

0 450