The form that I'm using in Delphi can you see here:

http://www.famstuij.dyndns.org:1026/images/zoeken.jpg

The left edit box is the place where the user can write the text
where he is looking for.

The right combobox is the place where the user tells the system where
it must search.

Normally in SQL you can do the next thing:

SELECT ARTIKELID, CASE MULTIPACK WHEN 'Y' THEN 'YES' ELSE 'NO' END
FROM ....

So my only question is how could I do this in Interbase?

I know there are some other possibilities, for example showing
radiobuttons. But that is something what I do NOT want.