Re: startup cost estimate

From: Jim Nasby <decibel(at)decibel(dot)org>
To: rakesh kumar <heyitsrakesh(at)yahoo(dot)com>
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: startup cost estimate
Date: 2006-11-25 17:48:55
Message-ID: D0B35AB0-D1D7-437F-B066-968072608FC3@decibel.org
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On Nov 18, 2006, at 3:15 AM, rakesh kumar wrote:
> How is the startup cost estimated in postgresql . Can u
> give me an example with necessary calculations .
> thanks .

Assuming you're talking about estimates from EXPLAIN/EXPLAIN ANALYZE,
the startup cost is the estimate of how much work it will take to
generate the first row from an operation.
--
Jim Nasby jim(at)nasby(dot)net
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)

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