Re: release notes: tids & self-joins

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От David Rowley
Тема Re: release notes: tids & self-joins
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Msg-id CAKJS1f88y0a_=0tujXH7Fq-G15cWLe2dWqEm8F-WbsPRKP3RGg@mail.gmail.com
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Ответ на Re: release notes: tids & self-joins  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: release notes: tids & self-joins  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Fri, 14 Jun 2019 at 05:22, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> Robert Haas <robertmhaas@gmail.com> writes:
> > So I think that this should probably be changed to say something like
> > "Improve optimization of self-joins on ctid columns" or "Improve
> > optimization of joins involving columns of type tid."
>
> The latter seems fine to me.

The latter seems a bit inaccurate to me given the fact that a column
with the type tid could exist elsewhere in the table.  Perhaps
"columns of type tid" can be swapped with "a table's ctid column".

-- 
 David Rowley                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services



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