Horton

Re: Additional improvements to extended statistics

Tomas Vondra <tomas.vondra@enterprisedb.com>

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From: Tomas Vondra <tomas.vondra@enterprisedb.com>
To: Dean Rasheed <dean.a.rasheed@gmail.com>
Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>, Daniel Gustafsson <daniel@yesql.se>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2020-12-01T12:50:59Z
Lists: pgsql-hackers 
On 12/1/20 9:15 AM, Dean Rasheed wrote:
> On Sun, 29 Nov 2020 at 21:02, Tomas Vondra
> <tomas.vondra@enterprisedb.com> wrote:
>>
>> Those are fairly minor issues. I don't have any deeper objections, and
>> it seems committable. Do you plan to do that sometime soon?
>>
> 
> OK, I've updated the patch status in the CF app, and I should be able
> to push it in the next day or so.
> 

Cool, thanks.


regards

-- 
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Commits

  1. Improve estimation of ANDs under ORs using extended statistics.

  2. Improve estimation of OR clauses using multiple extended statistics.

  3. Improve estimation of OR clauses using extended statistics.

  4. Prevent functional dependency estimates from exceeding column estimates.

  5. Fix wording of several extended stats comments

  6. Improve test coverage for multi-column MCV lists

  7. Improve test coverage for functional dependencies