Re: How does the planner deal with multiple possible

From: Hannu Krosing <hannu(at)skype(dot)net>
To: "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Gregory Maxwell <gmaxwell(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: How does the planner deal with multiple possible
Date: 2006-07-21 13:52:44
Message-ID: 1153489964.2846.6.camel@localhost.localdomain
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Ühel kenal päeval, R, 2006-07-21 kell 08:29, kirjutas Jim C. Nasby:

> No, this is 8.1.3, and it's a production machine so I'd prefer not to go
> about dropping indexes to get cost comparisons; unless there's some way
> to disable the use of an index in a given backend?

Currently the closest thing is

BEGIN;
DROP INDEX xxx;

test query here

ABORT;

> Otherwise I'll try
> and come up with a test case.
--
----------------
Hannu Krosing
Database Architect
Skype Technologies OÜ
Akadeemia tee 21 F, Tallinn, 12618, Estonia

Skype me: callto:hkrosing
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