| From: | Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru> |
|---|---|
| To: | David Steele <david(at)pgmasters(dot)net>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Columns correlation and adaptive query optimization |
| Date: | 2020-03-25 10:57:53 |
| Message-ID: | [email protected] |
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| Thread: | |
| Lists: | pgsql-hackers |
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 Author.
>
> Regards,
Rebased patch is attached.
--
Konstantin Knizhnik
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
| Attachment | Content-Type | Size |
|---|---|---|
| auto_explain_create_statistic-4.patch | text/x-patch | 18.2 KB |
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