From: Michael Meskes <meskes@postgresql.org>
To: Jakob Lechner <jakob.lechner@applstrudl.com>
Cc: Wilhansen Li <willi.t1@gmail.com>
Cc: pgsql-interfaces@postgresql.org
Subject: Re: Timestamp with libpq
Date: Mon, 13 Oct 2008 12:46:27 +0200
Message-ID: <20081013104627.GA23971@feivel.credativ.de> (raw)
In-Reply-To: <1223891843.3502.33.camel@vie063.fabagl.fabasoft.com>
References: <1223884381.3502.10.camel@vie063.fabagl.fabasoft.com>
<bc9549a50810130232nf40bfd2l2aee3c8c3ff5ec7e@mail.gmail.com>
<1223891843.3502.33.camel@vie063.fabagl.fabasoft.com>
On Mon, Oct 13, 2008 at 11:57:23AM +0200, Jakob Lechner wrote:
> I just wonder why my conversion routine for the binary timestamps
> returned from a postgres server running on RHEL works while it's not for
> a SLES server. Apparently the same SQL statement executed by exactly the
> same libpq API calls produces different results for the two postgres
> servers, one running on RHEL and another on SLES. Both postgres servers
> basically have the same version (8.1.4). The program that executes the
> SQL statement runs on my workstation and either connects to my RHEL
> server or to my SLES machine.
Please keep in mind that there is no guarantee that your server sends a double
in a binary query. This depens on whether integer-datatypes are configure or
not. Or in other words, it might be a long long instead of a double.
Is there any reason to use a binary transfer? I would not recommend this in a
general setup. If you just want to avoid some ascii translation hassle, how
about using ecpg instead of libpq? It will take care of everything you need.
Michael
--
Michael Meskes
Michael at Fam-Meskes dot De, Michael at Meskes dot (De|Com|Net|Org)
Michael at BorussiaFan dot De, Meskes at (Debian|Postgresql) dot Org
ICQ: 179140304, AIM/Yahoo: michaelmeskes, Jabber: meskes@jabber.org
Go VfL Borussia! Go SF 49ers! Use Debian GNU/Linux! Use PostgreSQL!
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To: pgsql-interfaces@postgresql.org
Cc: meskes@postgresql.org, jakob.lechner@applstrudl.com, willi.t1@gmail.com
Subject: Re: Timestamp with libpq
In-Reply-To: <20081013104627.GA23971@feivel.credativ.de>
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