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Re: Querying distinct values from a large table

Alvaro Herrera <alvherre@commandprompt.com>

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From: Alvaro Herrera <alvherre@commandprompt.com>
To: Gregory Stark <gsstark@mit.edu>
Cc: Luke Lonergan <llonergan@greenplum.com>, Chad Wagner <chad.wagner@gmail.com>, Simon Riggs <simon@2ndquadrant.com>, Igor Lobanov <ilobanov@swsoft.com>, Richard Huxton <dev@archonet.com>, pgsql-performance@postgresql.org
Date: 2007-01-30T17:04:43Z
Lists: pgsql-performance 
Gregory Stark wrote:

> (Incidentally I'm not sure where 2-5x comes from. It's entirely dependant on
> your data distribution. It's not hard to come up with distributions where it's
> 1000x as fast and others where there's no speed difference.)

So the figure is really "1-1000x"?  I bet this one is more impressive in
PHB terms.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
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