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Passing VarChar(Max) to a Table Function

Posted on 2010-11-25
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Last Modified: 2012-05-10
Hello,

I have been using a table function to parse a comma delimited string to a table.  The input paramter to the function is defined as VarChar(8000), I now need to change to input parameter to Varchar(Max).  

When I change the table fucntion input parameter to VarChar(max) and I execute the function the input parameter is Varchar - not Varchar(Max); only looking at the first character of the parameter.

This happens in SQL 2005 and 2008

If I change the table function input parameter to TEXT and then cast it to a varchar(max) within the function it works.

I know TEXT is going away - and I want to use Varchar(Max) as the input to a table function - what am I doing wrong?

Thanks
Kim


SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

-- =============================================

-- Description:	Splits a Comma Delimited sting of integer values

-- =============================================

ALTER Function [BIS].[fn_SplitCommaDelimited]

(

	-- Parameters for the function

	--	@parmList varchar(8000) HOW THE FUNCTION WORKS NOW

	--	@parmList varchar(max)  WHAT I WANT TO USE

	    @parmListIn TEXT

)

RETURNS 

 @BIS_Keys TABLE 

		-- Column definitions for the TABLE variable

		(

		[RowID] [int] IDENTITY (1, 1) NOT NULL ,

		[intID] [int] NOT NULL 

		 ) 



AS

BEGIN

	

	DECLARE @parmID varchar(10)

	DECLARE @Pos bigint

	DECLARE @parmList varchar(max)



	-- NEED VARCHAR TO USE THE CODE BELOW

	SET @parmList = CAST(@parmListIn AS VARCHAR(MAX))

	

	--Parse the comma separated values into 

	-- a table variable and join the table variable 

	-- to main table in the calling SP

	

	SET @parmList = LTRIM(RTRIM(@parmList))+ ','

	SET @Pos = CHARINDEX(',', @parmList, 1)



	-- Parse The List

	IF REPLACE(@parmList, ',', '') <> ''

	BEGIN

		WHILE @Pos > 0

		BEGIN

			SET @parmID = LTRIM(RTRIM(LEFT(@parmList, @Pos - 1)))

			IF @parmID <> ''

			BEGIN

				INSERT INTO @BIS_Keys (intID) VALUES (CAST(@parmID AS int)) --Use Appropriate conversion

			END

			SET @parmList = RIGHT(@parmList, LEN(@parmList) - @Pos)

			SET @Pos = CHARINDEX(',', @parmList, 1)



		END

	END	

	RETURN 



END

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0
Comment
Question by:KimberleyY
3 Comments
 
LVL 32

Accepted Solution

by:
Erick37 earned 450 total points
Comment Utility
Not having the same problem with this function.

select * from dbo.uf_Split2Int('1,2,3',',')
ALTER FUNCTION [dbo].[uf_Split2Int] 

(

	@cList varchar(max)

	,@cDelimiter varchar(5)

)  

RETURNS @SplitTable TABLE 

(

	nFieldValue int

) 

AS  

BEGIN 

	WHILE (CHARINDEX( @cDelimiter, @cList ) > 0)

	BEGIN

		INSERT INTO @SplitTable(nFieldValue)

		SELECT 

			CAST(LTRIM(RTRIM(SUBSTRING( @cList, 1, CHARINDEX( @cDelimiter, @cList ) - 1 ))) as int)



		SET @cList = SUBSTRING( @cList, CHARINDEX( @cDelimiter, @cList ) + LEN( @cDelimiter ), LEN(@cList) )

	END



	INSERT INTO @SplitTable (nFieldValue)

	SELECT LTRIM(RTRIM(@cList))



	RETURN

END

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0
 
LVL 4

Assisted Solution

by:Andre412
Andre412 earned 50 total points
Comment Utility
This maybe nothing but its worth checking

Check which version of sql you db is actually running under

in the management studio locate your db server, drill down to your db

right click > properties > options

look at the Compatibility level - this should be set to 2005 or above
0
 

Author Closing Comment

by:KimberleyY
Comment Utility
Thank you both - I ended up restarting the server and it now works fine.  
Eric - thank you for the more elegant solution.  As long as I am changing things I will add the delimiter parameter as well.

Andre412 - Thank you for pointing out checking the options.  I did and they were OK.  

Thank you both - KIm
0

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