Re: database session variables

Thanks Martijin,

It sounds like the process_id is the 'correct' name for what I was calling
session_id, and is what I want.  To answer your question, Oracle lets you
have session specific variables, via package variables.

Now the next step is how to get access to process_id.  I am currently
running PostgreSQL version 7.2.1.

"select procpid from pg_stat_activity;"  seems to return information for all
sessions (or 'processes').

Is backend_pid() or pg_stat_get_backend_pid() the correct call?  Neither of
them seem to exist in my database.  If they are correct, how do I install
them?

Thanks in advance,
Mark

----- Original Message -----
From: "Martijn van Oosterhout" <kleptog@svana.org>
To: "Mark Wilson" <mark@mediasculpt.com>
Cc: <pgsql-general@postgresql.org>
Sent: Wednesday, October 02, 2002 11:49 AM
Subject: Re: [GENERAL] database session variables


> On Wed, Oct 02, 2002 at 10:27:10AM +1200, Mark Wilson wrote:
> > Hi all,
> >
> > I am working on a system architecture that requires accessing session
> > variables specific to the database connection.  This is useful because
you
> > can emulate many users (with different privileges) with a single
database
> > logon.  Currently it seems like only user, current_user and session_user
> > are supported.
>
> Well, you can get the process ID of the backend process. This would be
> different for every connection.
>
> What other database allow you to store session specific variables?
> --
> Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> > There are 10 kinds of people in the world, those that can do binary
> > arithmetic and those that can't.
>
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