SQL split function by Karen Gayda

SET ANSI_NULLS OFF
GO
SET QUOTED_IDENTIFIER ON
GO

create FUNCTION [dbo].[fnSplit]
( @vcDelimitedString varchar(8000),
@vcDelimiter varchar(100) )
RETURNS @tblArray TABLE
(
ElementID smallint IDENTITY(1,1), --Array index
Element varchar(1000) --Array element contents
)
AS
/**************************************************************************
DESCRIPTION: Accepts a delimited string and splits it at the specified
delimiter points. Returns the individual items as a table data
type with the ElementID field as the array index and the Element
field as the data

PARAMETERS:
@vcDelimitedString - The string to be split
@vcDelimiter - String containing the delimiter where
delimited string should be split

RETURNS:
Table data type containing array of strings that were split with
the delimiters removed from the source string

USAGE:
SELECT ElementID, Element FROM Split('11111,22222,3333', ',') ORDER BY ElementID

AUTHOR: Karen Gayda

DATE: 05/31/2001

MODIFICATION HISTORY:
WHO DATE DESCRIPTION
--- ---------- ---------------------------------------------------

***************************************************************************/
BEGIN

DECLARE
@siIndex smallint,
@siStart smallint,
@siDelSize smallint


SET @siDelSize = LEN(@vcDelimiter)
--loop through source string and add elements to destination table array
WHILE LEN(@vcDelimitedString) > 0
BEGIN
SET @siIndex = CHARINDEX(@vcDelimiter, @vcDelimitedString)
IF @siIndex = 0
BEGIN
INSERT INTO @tblArray VALUES(@vcDelimitedString)
BREAK
END
ELSE
BEGIN
INSERT INTO @tblArray VALUES(SUBSTRING(@vcDelimitedString, 1,@siIndex - 1))
SET @siStart = @siIndex + @siDelSize
SET @vcDelimitedString = SUBSTRING(@vcDelimitedString, @siStart , LEN(@vcDelimitedString) - @siStart + 1)
END
END

RETURN
END
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER OFF
GO