| From: | Japin Li <japinli(at)hotmail(dot)com> |
|---|---|
| To: | wenhui qiu <qiuwenhuifx(at)gmail(dot)com> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Frédéric Yhuel <frederic(dot)yhuel(at)dalibo(dot)com> |
| Subject: | Re: Auto Vacuum optimisation |
| Date: | 2024-11-28 05:46:51 |
| Message-ID: | ME0P300MB04455AF56886A71BE11BA927B6292@ME0P300MB0445.AUSP300.PROD.OUTLOOK.COM |
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| Lists: | pgsql-hackers |
On Wed, 27 Nov 2024 at 15:51, wenhui qiu <qiuwenhuifx(at)gmail(dot)com> wrote:
> HI Japin Li
> Thank you for you reply, Do you think that removing the log2 algorithm because it will be more frequent,I think sql
> server chose sqrt algorithm after their long-term verification, I think we need to retain sqrt algorithm,The relevant
> documents are here(
> https://learn.microsoft.com/en-us/sql/relational-databases/statistics/statistics?view=sql-server-ver16),I will provide a
> new patch later with your reply
>
Worth a try.
However, I don't think we need to based on {vac,anl}_scale_factor when using
the sqrt algorithm.
--
Regrads,
Japin Li
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