| From: | Andrew Sullivan <andrew(at)libertyrms(dot)info> |
|---|---|
| To: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: constant time count(*) ? |
| Date: | 2003-10-15 18:44:09 |
| Message-ID: | 20031015184407.GE27479@libertyrms.info |
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| Lists: | pgsql-general |
On Wed, Oct 15, 2003 at 11:00:10AM -0700, Mark Harrison wrote:
>
> Is there a way to optimize count(*) such that it does not have
> to do a sequential scan? We use this on some big tables and it
> is slowing down processing quite a lot.
No. There's a busload of discussion on this topic in the archives.
If you need an approximate value, you can get it from the system
tables.
A
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Andrew Sullivan 204-4141 Yonge Street
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