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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Carlo Stonebanks <stonec.register@sympatico.ca>
Cc: pgsql-performance@postgresql.org
Subject: Re: Performance Optimization for Dummies 2 - the SQL
Date: Thu, 05 Oct 2006 12:35:33 -0400
Message-ID: <21472.1160066133@sss.pgh.pa.us> (raw)
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"Carlo Stonebanks" <stonec.register@sympatico.ca> writes:
> Just to clarify: if I expect to join two tables that I expect to benfit from 
> indexed scans, I should create indexes on the joined columns on BOTH sides?

Well, it all depends on the queries you plan to issue ... but for the
particular query shown here, the lack of that index is the performance
bottleneck.

			regards, tom lane



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