Re: Columns correlation and adaptive query optimization

On 25.03.2020 16:00, David Steele wrote:
> 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,

Sorry, yet another patch is attached.

-- 
Konstantin Knizhnik
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company