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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Hannu Krosing <hannu@skype.net>
Cc: 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: Tue, 06 Jun 2006 09:48:43 -0400
Message-ID: <15738.1149601723@sss.pgh.pa.us> (raw)
In-Reply-To: <1149597013.3818.7.camel@localhost.localdomain>
References: <44835834.2020309@dunaweb.hu>
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	<44845E86.3080001@dunslane.net>
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	<21820.1149531024@sss.pgh.pa.us>
	<1149597013.3818.7.camel@localhost.localdomain>

Hannu Krosing <hannu@skype.net> writes:
> Ühel kenal päeval, E, 2006-06-05 kell 14:10, kirjutas Tom Lane:
>> 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.

> would it not learn about it at the point of error ?

No, it would merely see EOF after some number of result rows.  (I'm
assuming you're also using -A -t so that the output is unadorned.)

			regards, tom lane



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