SQL Server Split function

--- takes a delimetered value and returns a table 
--Usage:
-- SELECT Data
-- FROM dbo.fnSplit('A,B,C', ',');
 
CREATE FUNCTION [dbo].[fnSplit]
(
	@RowData varchar(4000),
	@SplitOn varchar(5)
)  
RETURNS @RtnValue TABLE 
(
	Id int identity(1,1),
	DATA varchar(1000)
) 
AS  
	BEGIN 
		Declare @Cnt int
		SET @Cnt = 1
 
		While (Charindex(@SplitOn,@RowData)>0)
		Begin
			INSERT INTO @RtnValue (DATA)
			SELECT 
				DATA = ltrim(rtrim(Substring(@RowData,1,Charindex(@SplitOn,@RowData)-1)))
 
			SET @RowData = Substring(@RowData,Charindex(@SplitOn,@RowData)+1,len(@RowData))
			SET @Cnt = @Cnt + 1
		End
 
		INSERT INTO @RtnValue (DATA)
		SELECT DATA = ltrim(rtrim(@RowData))
 
		RETURN
	END