> Yes - that what I need,
>
> I'll give it a go and let you know how I get on.
>
> Thanks for your help.

Wellcome. Makes me happy if it solves your problem.

I was forced to discovered this logic myself when i wrote my
graduation project using SQL/370 + CSP/AD in 1989.
They were Internetless, Firebirdless, missing days. ;)

Ali
The Militia of Firebird