Intersect/Union X AND/OR

From: Thiago Godoi <thiagogodoi10(at)gmail(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Intersect/Union X AND/OR
Date: 2011-12-02 15:55:11
Message-ID: CAFQfwCpF53m6R+PmmAxD3Vmggzt93LbJx05on4_9Rx=di9D9MA@mail.gmail.com
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Hi all,

I found this presentation from B. Momjian:

http://momjian.us/main/writings/pgsql/performance.pdf

I'm interested in what he said about " Intersect/Union X AND/OR " , Can I
find a transcription or a video of this presentation? Can anyone explain it
to me?

Thanks,

Thiago Godoi

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