Re: [SQL] Re: questions on interpreting the output of explain\

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От Bruce Momjian
Тема Re: [SQL] Re: questions on interpreting the output of explain\
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Msg-id 199902212123.QAA25946@candle.pha.pa.us
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Ответ на Re: questions on interpreting the output of explain  (Tom Lane <tgl@sss.pgh.pa.us>)
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Excellent analysis.  I will find a way to add this into the documenation
somewhere.


> Michael Olivier <molivier@yahoo.com> writes:
> > Can someone explain the details here to me? I guess specific questions
> > are:
> > - - Does hash join mean my acctname indexes are hashed, not btree'd?
> > - - What does index scan mean?
> > - - Nested loop?
>
> OK, I'll take a cut at this.  (I've been studying the Postgres optimizer
> lately, so I know a little bit about this, but I may be wrong about some
> of the details.)


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