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Slow Function

ubsmail asked
Last Modified: 2012-05-11
Any suggestions to speed up this funtction? 350 Rows takes over 1 minute. Maybe using stuff?
CREATE function GetStockDesc(@StockNumber varchar(8000))
RETURNS varchar(8000) AS     
DECLARE @StockDesc varchar(8000)
set  @StockDesc = ''

Select  @StockDesc = isnull(rtrim(ltrim(@StockDesc)) + ', ', '') + brandcat.desc1
From    brandcat
Where  brandcat.number  =  @StockNumber

if(LEN(@StockDesc) > 0)
set @StockDesc  = substring(LTRIM(rtrim(@StockDesc)), 2,LEN(@StockDesc))  


RETURN  @StockDesc    

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