SQL convert string data in hexadecimal format into string text

Question

I have a table which has a column X. X will be storing large text values in hex format. Now I want to convert hex to raw and validate the data. But when I am using the below que

Answer 1

It seems that this works better for me.

if exists (select * from dbo.sysobjects where name = 'HexToStr' and xtype = 'FN')
drop function [dbo].[HexToStr]
GO

CREATE FUNCTION [dbo].[HexToStr] (@hexstring VARCHAR(max))
RETURNS VARCHAR(max)

AS

begin
 return @hexstring
end
GO