Re: [HACKERS] Performance improvement for joins where outer side is unique

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От David Rowley
Тема Re: [HACKERS] Performance improvement for joins where outer side is unique
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Msg-id CAKJS1f8Ci2pdR0Jnj9bkzNg5bVYHLGR55wG=cMLZ2vQG+bDRzA@mail.gmail.com
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Ответ на Re: [HACKERS] Performance improvement for joins where outer side is unique  (David Rowley <david.rowley@2ndquadrant.com>)
Ответы Re: [HACKERS] Performance improvement for joins where outer side is unique  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-hackers
On 27 January 2017 at 00:37, David Rowley <david.rowley@2ndquadrant.com> wrote:
> The attached has my Merge Join changes, to show what I think can be
> done to make use of unique outer. Let me know what you think, but I
> get that idea that we're both leaning towards ripping the outer unique
> stuff out, so I'll go do that now...

I've attached a version without outer unique.

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

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