At 10:12 PM 23/01/2003 -0800, you wrote:

>Thanks very much. btw where i can find the documentation about all
>operator at
>Firebird. I have read Data Definition and Language Reference but did'nt
>find about that

It's not very well organised, is it? Add the Developer's Guide
(DevGuide.pdf) to your armoury and you might get more information. Some
crucial sections from the IB 5.5 manuals, on Understanding SQL Expressions,
seem to have disappeared...or they are just lurking in one of the books and
I haven't found them yet...

heLen