public inbox for [email protected]  

help / color / mirror / Atom feed

From: Tom Lane <[email protected]>
To: David Fetter <[email protected]>
Cc: PostgreSQL Docs <[email protected]>
Cc: PostgreSQL Patches <[email protected]>
Subject: Re: Approximate count(*)
Date: Thu, 24 Mar 2005 12:34:51 -0500
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

David Fetter <[email protected]> writes:
> Please find enclosed a patch that shows how to get a quick
> approximation of count(*) on a table.

I'm not sure we should be encouraging people to look at reltuples...
for one thing, it's deliberately a moving average under 8.0.

			regards, tom lane

view thread (6+ messages)  latest in thread

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected], [email protected], [email protected]
  Subject: Re: Approximate count(*)
  In-Reply-To: <[email protected]>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox