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Re: The REAL cost of joins

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To: Richard Huxton <dev@xxxxxxxxxxxx>
Subject: Re: The REAL cost of joins
From: Grzegorz Jaśkiewicz <gryzman@xxxxxxxxx>
Date: Thu, 4 Mar 2010 10:01:50 +0000
Cc: Marcin Krol <mrkafk@xxxxxxxxx>, pgsql-general@xxxxxxxxxxxxxx
In-reply-to: <4B8F73B4.40600@xxxxxxxxxxxx>

the reason you are using joins, most often is because your schema is normalized. One way or another, de-normalisation + queries will cost you more, than normalised tables and joins.
That's at least the short answer.

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References:
- The REAL cost of joins
  - From: Marcin Krol
- Re: The REAL cost of joins
  - From: Richard Huxton

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