break and return #temp_catid if(true) - sql

Question

i have a following sql function which takes a string word as input it then checks whether the word is equal to a categoryName or not i want it to behave like when the if statement is true it breaks from the loop and return #temp_catid else it returns 0 or 1 how can i do that im new to sql scripting plz help... below is my function
USE [myDB]
GO
/****** Object: UserDefinedFunction [dbo].[udfisEqualToCategory] Script Date: 01/31/2011 10:57:56 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
Create FUNCTION [dbo].[udfisEqualToCategory](#word nvarchar(max))
RETURNS INT
AS
BEGIN
--declare a temp category table for data processing
declare #temptbl_category Table
(
indexx int identity(1,1),
categoryid int,
categoryname nvarchar(max)
)
--insert data from feedcrawler.category into temp category table
insert into #temptbl_category
select CategoryId,Name
from Category
--declare some variables to hold the data of current row of temp category table being processed while looping
declare #temp_catid int
declare #temp_catname nvarchar(max)
declare #rowcount int
set #rowcount=(select count(indexx)from #temptbl_category)
declare #I int
set #I=1
--print'given string-> '+ #FullName
--print'string length-> '+convert(nvarchar(max),#strlen)
while(#I <= #rowcount)
begin
select #temp_catname=categoryname,#temp_catid=categoryid from #temptbl_category where indexx=#I
set #temp_catname=lower(#temp_catname)
if(#word=#temp_catname)
begin
return #temp_catid
break
end--end if
set #I=#I+1
END--while loop ends
return 0
end-- function ends
GO

Answer 1

No need to loop, just search the table with WHERE
Create FUNCTION [dbo].[udfisEqualToCategory](#word nvarchar(max))
RETURNS INT
AS
BEGIN
declare #temp_catid int
select
#temp_catid = categoryid
from
Category
WHERE
LOWER(#word) = LOWER(categoryname);
--no match = #temp_catid IS NULL. So change to zero
RETURN ISNULL(#temp_catid, 0);
END
GO