Posted by Erland Sommarskog on 02/22/07 22:13

KenJ (kenjohnson@hotmail.com) writes:
> CREATE FUNCTION dbo.ufn_concatProducts(
> @email varchar(255)
> , @company varchar(255))
> RETURNS varchar(255)
> AS
> BEGIN
> DECLARE @productList varchar(8000)
>
> SELECT
> @productList = coalesce(@productList + ',', '') + product
> FROM
> tbl
> WHERE
> email = @email AND
> company = @company
>
> RETURN(@productList)
> END

Not that this function relies on undefined behaviour. You may get what
you execpt, but everyonce in ahile. you don't.


--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downloads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodinfo/previousversions/books.mspx

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