sql字符串分组

create function f_myWord(@s varchar(50))
returns varchar(50)
  as
begin
declare @i int
set @i=1
while @i<=3 begin
  set @s=SUBSTRING(@s,CHARINDEX(',',@s)+1,len(@s))
  set @i=@i+1
end
return @s
end

--执行的时候就
select dbo.f_myWord(列名) from 你的哪个表

-- =============================================
-- Author:  阿瑞
-- Create date: 2008-03-19
-- Description: split函数
-- Debug:select * from dbo.Fun_Split('ABC:BC:C:D:E',':')
-- =============================================
CREATE FUNCTION [dbo].[Fun_Split]
(
 @SourceSql varchar(8000),
 @StrSeprate varchar(10)
)
RETURNS
 @TEMP_Table TABLE (a varchar(100))
AS
BEGIN
  DECLARE @i int
  SET @SourceSql=rtrim(ltrim(@SourceSql))
  SET @i=charindex(@StrSeprate,@SourceSql)
  WHILE @i>=1
    BEGIN
     INSERT @TEMP_Table VALUES(left(@SourceSql,@i-1))
     SET @SourceSql=substring(@SourceSql,@i+1,len(@SourceSql)-@i)
     SET @i=charindex(@StrSeprate,@SourceSql)
  END
 if @SourceSql<>'/'
   INSERT @TEMP_Table values(@SourceSql)
 RETURN
END

调用：select * from dbo.Fun_Split('ABC:BC:C:D:E',':')