sql server 字符串转table

-- =============================================
-- Author: gengc
-- Create date: <2012-12-29> -- Description: <字符串转Table>
-- Description: <字符串转Table>
-- SELECT * from dbo.F_StringToTable('123,aaa',',')
-- =============================================
create function [dbo].[F_StringToTable] (@str nvarchar(max),@split varchar(10))
returns @t Table (col varchar(100))
as
begin
    declare @i int
    declare @s int
    set @i=1
    set @s=1
    while(@i>0)
    begin    
        set @i=charindex(@split,@str,@s)
        if(@i>0)
        begin
            insert @t(col) values(substring(@str,@s,@i-@s))
        end   
        else begin
            insert @t(col) values(substring(@str,@s,len(@str)-@s+1))
        end
        set @s = @i + 1   
    end
    return
end