From: | Dmitriy Igrishin <dmitigr(at)gmail(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Peter Geoghegan <peter(dot)geoghegan86(at)gmail(dot)com>, Greg Sabino Mullane <greg(at)turnstep(dot)com>, pgsql-general(at)postgresql(dot)org |
Subject: | Re: querying the version of libpq |
Date: | 2010-10-05 20:41:49 |
Message-ID: | AANLkTinYeZd2CgRsxgdbi+aWHst5_ydXxQh-SrE8x+du@mail.gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general pgsql-hackers |
Hey all,
Could you call it as PQlibVersion() or even PQversion() instead of
PQlibpqVersion() ?
2010/10/5 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
> Peter Geoghegan <peter(dot)geoghegan86(at)gmail(dot)com> writes:
> > On 5 October 2010 16:33, Greg Sabino Mullane <greg(at)turnstep(dot)com> wrote:
> >>> How does the driver figure it out?
> >>
> >> DBD::Pg parses pg_config --version, then passes the information
> >> to the C programs for directive fiddling. I certainly hope
> >> other drivers are doing the same, as libpq varies across
> >> major versions a good deal.
>
> > I would imagine that most libpq wrapping drivers use libpq's
> > PQserverVersion(), which returns an integer that looks like 90000.
>
> The real problem is that neither of these can be trusted to tell you the
> *library* version. PQserverVersion() is something else altogether,
> and I wouldn't want to assume that pg_config exactly matches the library
> you're linked to --- if it's even present at all.
>
> We could add a PQlibpqVersion(), maybe, but it would be many years
> before client code could rely on that being present.
>
> regards, tom lane
>
> --
> Sent via pgsql-general mailing list (pgsql-general(at)postgresql(dot)org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-general
>
--
// Dmitriy.
From | Date | Subject | |
---|---|---|---|
Next Message | Magnus Hagander | 2010-10-05 20:44:48 | Re: querying the version of libpq |
Previous Message | Greg Sabino Mullane | 2010-10-05 20:39:41 | Re: querying the version of libpq |
From | Date | Subject | |
---|---|---|---|
Next Message | Josh Berkus | 2010-10-05 20:43:20 | Re: Issues with Quorum Commit |
Previous Message | Greg Sabino Mullane | 2010-10-05 20:39:41 | Re: querying the version of libpq |