Re: Client application name

Dave Page <dpage@pgadmin.org> writes:
> On Tue, Oct 13, 2009 at 10:25 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> We have several things already that can be fed either from an
>> environment variable or an option in the connection string.
>> Is there any compelling reason why those two mechanisms aren't
>> adequate for this?

> Err, yes - see above. And didn't you also say it was essential to be
> able to change it after the initial connection (for which the GUC
> seems like the obvious solution)?

Sure.  I'm envisioning that what the env variable or connection option
actually does is cause libpq to include a SET command for a GUC
variable in the initial connection request packet.  Compare, say,
PGCLIENTENCODING -> client_encoding.
        regards, tom lane