| From: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
|---|---|
| To: | david(at)lang(dot)hm |
| Cc: | Віталій Тимчишин <tivv00(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Jon Nelson <jnelson+pgsql(at)jamponi(dot)net>, Mladen Gogala <mladen(dot)gogala(at)vmsinfo(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Craig Ringer <craig(at)postnewspapers(dot)com(dot)au>, "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] Slow count(*) again... |
| Date: | 2011-02-04 07:59:06 |
| Message-ID: | 4D4BB1CA.6020400@dunslane.net |
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| Lists: | pgsql-hackers pgsql-performance |
On 02/04/2011 02:32 AM, david(at)lang(dot)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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