小编Sam*_*ett的帖子

我完全为在mysql中从rank（）over（按x分区，按y desc排序）创建新列“ LoginRank”而感到困惑。

From sql server i would write the following query, to create a column "Loginrank" that is grouped by "login" and ordered by "id".

select ds.id, 
       ds.login, 
       rank() over(partition by ds.login order by ds.id asc) as LoginRank
from tablename.ds

I have the following table.

create table ds (id int(11), login int(11))
insert into ds (id, login) 
values  (1,1),
    (2,1),
    (3,1),
    (4,2),
    (5,2),
    (6,6),
    (7,6),
    (8,1)   

I tried applying many existing mysql fixes to my dataset but continue to …