Intersect/Union X AND/OR

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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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