Re: Excessive disk usage in WindowAgg - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Excessive disk usage in WindowAgg
Date
Msg-id 25077.1572895216@sss.pgh.pa.us
Whole thread Raw
In response to Re: Excessive disk usage in WindowAgg  (Andres Freund <andres@anarazel.de>)
Responses Re: Excessive disk usage in WindowAgg  (Andrew Gierth <andrew@tao11.riddles.org.uk>)
List pgsql-hackers
Andres Freund <andres@anarazel.de> writes:
> On 2019-11-04 19:04:52 +0000, Andrew Gierth wrote:
>> Uh, it seems obvious to me that it should be backpatched?

> Fine with me. But I don't think it's just plainly obvious, it's
> essentailly a change in query plans etc, and we've been getting more
> hesitant with those over time.

Since this is happening during create_plan(), it affects no planner
decisions; it's just a pointless inefficiency AFAICS.  Back-patching
seems fine.

            regards, tom lane



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