在sql server中,我有一个表,其中的产品如下
Manf Prod Id Desc
Audi A1 1 Tyre tye 1
Audi A1 2 Tyre type 2
Audi A1 3 Tyre type 3
BMW B1 4 Tyre tye 1
BMW B1 5 Tyre type 2
BMW B1 6 Tyre type 3
Toyota T1 7 Tyre type 1
我想用manf和prod的逐列分组输出,但id应该是任何值。。请告知查询。。
Manf Prod Id
Audi A1 1
BMW B1 4
Toyota T1 7
select Manf, Prod, min(id) as Id
from your_table
group by Manf, Prod
如果想要完整的行,可以使用row_number()
:
select t.*
from (select t.*,
row_number() over (partition by manf, prod order by (select NULL)) as seqnum
form table t
) t
where seqnum = 1;