> > >What I wan't to do is extracting PKs from a string
> > >which is delivered by my app.
> >
> > If you're using Firebird, don't use a UDF for substring, use the
> > SUBSTRING() internal function.
>
> Where can I find information about such functions?
> I'm still using 'IB 6 Language Reference' and there this
> function is not mentioned.

Firebird 1.0 Release Notes. ;-)


Best Regards,
Thomas Steinmaurer
LogManager Series - Logging/Auditing Suites supporting
InterBase, Firebird, Advantage Database and MS SQL Server
Upscene Productions
http://www.upscene.com