Re: Which installation parts are backward compatible?

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Which installation parts are backward compatible?
Date: 2009-02-13 08:58:42
Message-ID: 49953642.60804@gmx.net
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Michael Meskes wrote:
> On Thu, Feb 12, 2009 at 04:16:05PM +0200, Peter Eisentraut wrote:
>> Item Compatible across major versions?
>> (i.e. the 8.4 version works with 7.4+ server)
>> ...
>> ecpg no?
>
> It depends on which kind of compatibility you're looking for. The grammar
> accepted will surely be different. But running a new application with a new
> ecpglib against an old server works as long as libpq works.

Will a program built with ecpg 8.4 run against a 7.4 server work the
same as the same program built with ecpg 7.4 run against a 7.4 server?
(This implies that the program uses only features present in 7.4.)

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