Text (or Ntext) Concatenation

i want to concatenate 2 columns of type text

what am trying to do is adding an instead of trigger on update which concatenates the old value in the text column with the new value

so the problem is how i can concatenate both values since i cant declare a variable of type text.

A solution may be dividing the text column into many varchar(8000) variables and then add them but i dont know how it can be implemented or if there's an easier solution

the code am trying:

CREATE TRIGGER InsteadTrigger on tbl
INSTEAD OF Update
AS
BEGIN

if exists(select null from deleted)
begin
--am considering updating only 1 row
update tbl set theValue=((select theValue from deleted)+(select theValue from inserted))
end



i tried the writetext and updatetext functions and the problem is always related to both columns concatenation


Any solution?

thx
samham