Re: [PERFORM] encouraging index-only scans - Mailing list pgsql-hackers

From Andres Freund
Subject Re: [PERFORM] encouraging index-only scans
Date
Msg-id 20140211175410.GF31598@awork2.anarazel.de
Whole thread Raw
In response to Re: [PERFORM] encouraging index-only scans  (Bruce Momjian <bruce@momjian.us>)
Responses Re: [PERFORM] encouraging index-only scans  (Bruce Momjian <bruce@momjian.us>)
List pgsql-hackers
On 2014-02-11 12:12:13 -0500, Bruce Momjian wrote:
> Yes, that pretty much sums it up.  We introduced index-only scans in 9.2
> (2012) but they still seem to be not usable for insert-only workloads
> two years later.  Based on current progress, it doesn't look like this
> will be corrected until 9.5 (2015).  I am kind of confused why this has
> not generated more urgency.

I think this largely FUD. They are hugely beneficial in some scenarios
and less so in others. Just like lots of other features we have.

Greetings,

Andres Freund

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



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