[Info-Ingres] Version text ...

[Michael Leo]

Gang,

I'm trying to write some code that behaves differently
for different versions of Ingres.

Lately, that is harder and harder.

I'm connecting via Ingres/NET, so I can't look at any
of these files:

  ${II_SYSTEM}/ingres/version.rel
  "%II_SYSTEM%\ingres\version.rel"
  II_SYSTEM:[INGRES]version.rel

So instead, I use

   select dbmsinfo('_version')

to get strings like

  II 9.1.0 (int.w32/123)
  II 9.2.0 (int.lnx/102)NPTL

Now, I really understand everything up until
Ingres II 2.6, but I've somehow lost track of
what is going on lately.

Short of installing each version and checking, where
can I find out what version of Ingres produces what
version string?  And can someone explain to me how the
commercial releases can be distinguished from the
open source ones?

Thanks,

Mike Leo