> -----Original Message-----
> From: SAKAIDA Masaaki [mailto:sakaida@psn.co.jp]
>
> "Hiroshi Inoue" <Inoue@tpf.co.jp> wrote:
> >
> > In general client libraries/applications have to keep backward
> > compatibility as possible,so it isn't enough for clients to be able to
> > talk to the latest version of PostgreSQL servers.
> >
> > Comments ?
>
> I agree with you.
>
> User doesn't know how the specification of the server has been
> changed. Therefore, it is natural that user believe that new
> psql can talk to older server. Because backward compatibility is
> a reasonable rule of the upgrading in generic client software.
>
Hmm,sorry for my poor English.
What I meant is a little different from yours.
What I wanted was to know official opinions about backward
compatibility of clients(not only psql)included in PostgreSQL's
release.
As for psql it isn't a generic client software as Peter mentioned.
It's a part of backend in a sense. At least it could talk to pre-7.0
backend and it isn't so critical that \l,\df and \dd doesn't work for
pre-7.0 backends. I'm not so much eager to change psql myself.
There's already your pgbash that keeps backward compatibility.
Regards.
Hiroshi Inoue
Inoue@tpf.co.jp