Found out http://www.postgresql.org/docs/8.1/static/ddl-system-columns.html, sorry for distraction.
On Oct 17, 2012, at 17:24 , Samat Galimov <gsamat@gmail.com> wrote:
> Hello,
> When I say
> $ \d+ pg_class
> or
> $ table class
> i don't see any oid column, but I can
> $ select oid
> and everything goes really fine.
>
> What is the magic here? Have I overlooked something in documentation?