sql 增加自增涨序号

[anlianganl]

declare @str  varchar(2000)
declare @i int
set @i = 1
set @str=''

SELECT @str=@str+cast((@i+1) as CHAR(1))+isnull(tm.sAnswer,'')
FROM tbAnswer t
left outer join dbo.tbPollMyAnswer tm on tm.iAnswerId=t.iAnswerId
WHERE t.iQuestionID=12 and tm.sAnswer is not null
print @str

如上
想加一个 序号，1，2，3，4......
大神们给点指点

[kingtiy]

DECLARE @str VARCHAR(2000)
DECLARE @i INT
SET @i = 1
SET @str = ''
 
SELECT  @str = @str+ ROW_NUMBER()OVER(ORDER BY tm.sAnswer ) AS RID, + ISNULL(tm.sAnswer, '')
FROM    tbAnswer t
        LEFT OUTER JOIN dbo.tbPollMyAnswer tm ON tm.iAnswerId = t.iAnswerId
WHERE   t.iQuestionID = 12
        AND tm.sAnswer IS NOT NULL
PRINT @str

[Mr_Nice]

declare @str  varchar(2000)
declare @i int
set @i = 1
set @str=''
 
SELECT @str=@str+cast((@i+1) as CHAR(1))+isnull(tm.sAnswer,''),num=rownumber()over(order by getdate())
FROM tbAnswer t
left outer join dbo.tbPollMyAnswer tm on tm.iAnswerId=t.iAnswerId
WHERE t.iQuestionID=12 and tm.sAnswer is not null
print @str

[-Tracy-McGrady-]

num=rownumber()over(order by getdate())