Re: [INTERFACES] libpq & user

> In the psql source code, they set the user by setting the PGUSER
> environment variable. The source of the PQsetdb function states that the
> following environment variables are accepted (although this is not
> documented - at least not in my old 6.2.1 version):

Aha! Thank you, that was the secret. I do not believe that these
environment variables are documented in 6.3.1 either -- at least, I didn't
find them. I tried USER, but not PGUSER. Setting PGUSER worked.

> Another option: the psql source, when needing a password, uses the
> undocumented function:
>
> PQconnectdb( connection_string );
>
> The connection string is a C character string containing pairs of names and
> values. For example: "host=dara user=deep password=ocean dbname=deep".

This is how the Pg.pm perl connectdb function works; that _is_ documented
in the Pg man page. Presumably this is a "documented" feature of libpq,
but the documentation hasn't caught up yet. (Of course, it's always scary
to assume things like that.)

Thanks again for your help.

-Rob

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==== Rob Knop ===== rknop(at)lbl(dot)gov ====== http://panisse.lbl.gov/~rknop ======