Horton

Re: Columns correlation and adaptive query optimization

David Steele <david@pgmasters.net>

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From: David Steele <david@pgmasters.net>
To: Konstantin Knizhnik <k.knizhnik@postgrespro.ru>, pgsql-hackers@postgresql.org
Date: 2020-03-25T13:00:39Z
Lists: pgsql-hackers 
On 3/25/20 6:57 AM, Konstantin Knizhnik wrote:
> 
> 
> On 24.03.2020 20:12, David Steele wrote:
>> On 12/24/19 3:15 AM, Konstantin Knizhnik wrote:
>>> New version of patch implicitly adding multicolumn statistic in 
>>> auto_explain extension and using it in optimizer for more precise 
>>> estimation of join selectivity.
>>> This patch fixes race condition while adding statistics and restricts 
>>> generated statistic name to fit in 64 bytes (NameData).
>>
>> This patch no longer applies: https://commitfest.postgresql.org/27/2386/
>>
>> The CF entry has been updated to Waiting on Autho
> 
> Rebased patch is attached.

The patch applies now but there are error on Windows and Linux:
https://ci.appveyor.com/project/postgresql-cfbot/postgresql/build/1.0.85481
https://travis-ci.org/postgresql-cfbot/postgresql/builds/666729979

Regards,
-- 
-David
david@pgmasters.net