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From: Andrew Dunstan <andrew@dunslane.net>
To: david@lang.hm
Cc: Віталій Тимчишин <tivv00@gmail.com>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Jon Nelson <jnelson+pgsql@jamponi.net>
Cc: Mladen Gogala <mladen.gogala@vmsinfo.com>
Cc: Bruce Momjian <bruce@momjian.us>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Craig Ringer <craig@postnewspapers.com.au>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: [HACKERS] Slow count(*) again...
Date: Fri, 04 Feb 2011 02:59:06 -0500
Message-ID: <4D4BB1CA.6020400@dunslane.net> (raw)
In-Reply-To: <alpine.DEB.2.00.1102032327430.8162@asgard.lang.hm>
References: <201102012247.p11Ml6u02682@momjian.us>
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	<AANLkTiknZi97dDwm7sHqy0EL7tpNEP9sY5uPV6AN+q=u@mail.gmail.com>
	<4D499E55.4020107@vmsinfo.com>
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	<alpine.DEB.2.00.1102030208440.8162@asgard.lang.hm>
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	<alpine.DEB.2.00.1102031243190.10088@asgard.lang.hm>
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	<alpine.DEB.2.00.1102032327430.8162@asgard.lang.hm>



On 02/04/2011 02:32 AM, david@lang.hm wrote:
>
> when a copy command is issued, I assume that there is some indication 
> of how much data is going to follow.
>
>

No of course there isn't. How would we do that with a stream like STDIN? 
Read the code.

cheers

andrew



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