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题解 | #获得积分最多的人(二)#
select user.id,user.name,g1.s_num from (select user_id,sum(grade_num) as s_num from grade_info group BY user_id ) g1 join user on g1.user_id = user.id...
Mysql
2022-01-16
0
193
题解 | #网易云音乐推荐(网易校招笔试真题)#
select music_name from ( select distinct music_id, music_name from ( select f1.user_id,f1.follower_id,ml.music_id,mc.music_name from follow as f1 join...
Mysql
2022-01-16
1
306