sql 怎么添加序号

sql 如何添加序号
A表如下:

单号条码送修时间维修完成时间
1 A 2011-10-9 2011-10-10
2 A 2011-10-15 2011-10-31
3 A 2011-12-16 2011-12-30
4 B 2011-9-10 2011-9-15
5 B 2011-11-10 2011-11-20
6 C 2011-12-1 2011-12-3
7 C 2011-12-5 2011-12-6

效果如下:

序号单号条码送修时间维修完成时间
1 1 A 2011-10-9 2011-10-10
2 2 A 2011-10-15 2011-10-31
3 3 A 2011-12-16 2011-12-30
1 4 B 2011-9-10 2011-9-15
2 5 B 2011-11-10 2011-11-20
1 6 C 2011-12-1 2011-12-3
2 7 C 2011-12-5 2011-12-6

用sql如何添加序号??请教各位大虾,在此十分感谢

------解决方案--------------------
哦,前一帖子里不是用了序号了嘛!

呵呵,我忘了我是不用序号来解的.

SQL code

create table tb(单号 int,条码 varchar(10),送修时间 datetime,维修完成时间 datetime)
insert into tb select 1,'A','2011-10-9','2011-10-10'
insert into tb select 2,'A','2011-10-15','2011-10-31'
insert into tb select 3,'A','2011-12-16','2011-12-30'
insert into tb select 4,'B','2011-9-10','2011-9-15'
insert into tb select 5,'B','2011-11-10','2011-11-20'
insert into tb select 6,'C','2011-12-1','2011-12-3'
insert into tb select 7,'C','2011-12-5','2011-12-6'
go
select row_number()over(partition by 条码 order by 送修时间)序号,* from tb
/*
序号                   单号          条码         送修时间                    维修完成时间
-------------------- ----------- ---------- ----------------------- -----------------------
1                    1           A          2011-10-09 00:00:00.000 2011-10-10 00:00:00.000
2                    2           A          2011-10-15 00:00:00.000 2011-10-31 00:00:00.000
3                    3           A          2011-12-16 00:00:00.000 2011-12-30 00:00:00.000
1                    4           B          2011-09-10 00:00:00.000 2011-09-15 00:00:00.000
2                    5           B          2011-11-10 00:00:00.000 2011-11-20 00:00:00.000
1                    6           C          2011-12-01 00:00:00.000 2011-12-03 00:00:00.000
2                    7           C          2011-12-05 00:00:00.000 2011-12-06 00:00:00.000

(7 行受影响)

*/
go
drop table tb

------解决方案--------------------

SQL code

新增列时

--> --> (Roy)生成測試數據
 
if not object_id('Tempdb..#T') is null
    drop table #T
Go
Create table #T([单号] int,[条码] nvarchar(1),[送修时间] Datetime,[维修完成时间] Datetime)
Insert #T
select 1,N'A','2011-10-9','2011-10-10' union all
select 2,N'A','2011-10-15','2011-10-31' union all
select 3,N'A','2011-12-16','2011-12-30' union all
select 4,N'B','2011-9-10','2011-9-15' union all
select 5,N'B','2011-11-10','2011-11-20' union all
select 6,N'C','2011-12-1','2011-12-3' union all
select 7,N'C','2011-12-5','2011-12-6'
Go
alter table #T add 序号 int
go
update t
set 序号=(select count(1) from #T where 条码=t.条码 and 单号<=t.单号) 
from #T as t

--sql2005用
update t
set 序号=ID
from 
(select ID=row_number()over(partition by 条码 order by 单号),* from #T)t
/*
ID    单号    条码    送修时间    维修完成时间
1    1    A    2011-10-09 00:00:00.000    2011-10-10 00:00:00.000
2    2    A    2011-10-15 00:00:00.000    2011-10-31 00:00:00.000
3    3    A    2011-12-16 00:00:00.000    2011-12-30 00:00:00.000
1    4    B    2011-09-10 00:00:00.000    2011-09-15 00:00:00.000
2    5    B    2011-11-10 00:00:00.000    2011-11-20 00:00:00.000
1    6    C    2011-12-01 00:00:00.000    2011-12-03 00:00:00.000
2    7    C    2011-12-05 00:00:00.000    2011-12-06 00:00:00.000
*/

sql 怎么添加序号

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