From: Tom Lane <tgl@sss.pgh.pa.us>
To: Neil Conway <neilc@samurai.com>
Cc: Zoltan Boszormenyi <zboszor@dunaweb.hu>
Cc: Andrew Dunstan <andrew@dunslane.net>
Cc: Mark Woodward <pgsql@mohawksoft.com>
Cc: Jim C. Nasby <jnasby@pervasive.com>
Cc: pgsql-hackers@postgresql.org
Subject: Re: [PERFORM] psql -A (unaligned format) eats too much
Date: Mon, 05 Jun 2006 14:10:24 -0400
Message-ID: <21820.1149531024@sss.pgh.pa.us> (raw)
In-Reply-To: <1149529945.5577.5.camel@localhost>
References: <44835834.2020309@dunaweb.hu>
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<20060605152258.GT53487@pervasive.com>
<20512.1149521250@sss.pgh.pa.us>
<20060605155349.GU53487@pervasive.com>
<20813.1149523235@sss.pgh.pa.us>
<18006.24.91.171.78.1149526092.squirrel@mail.mohawksoft.com>
<44845E86.3080001@dunslane.net>
<4484672B.8080606@dunaweb.hu>
<1149529945.5577.5.camel@localhost>
Neil Conway <neilc@samurai.com> writes:
> On Mon, 2006-06-05 at 19:17 +0200, Zoltan Boszormenyi wrote:
>> The general case cannot be applied for all particular cases.
>> E.g. you cannot use cursors from shell scripts
> This could be fixed by adding an option to psql to transparently produce
> SELECT result sets via a cursor.
Note of course that such a thing would push the incomplete-result
problem further upstream. For instance in (hypothetical --cursor
switch)
psql --cursor -c "select ..." | myprogram
there would be no very good way for myprogram to find out that it'd
been sent an incomplete result due to error partway through the SELECT.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, neilc@samurai.com, zboszor@dunaweb.hu, andrew@dunslane.net, pgsql@mohawksoft.com, jnasby@pervasive.com, pgsql-hackers@postgresql.org
Subject: Re: [PERFORM] psql -A (unaligned format) eats too much
In-Reply-To: <21820.1149531024@sss.pgh.pa.us>
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