| From: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Mark Dilger <hornschnorter(at)gmail(dot)com>, Adrien Nayrat <adrien(dot)nayrat(at)dalibo(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] PATCH: multivariate histograms and MCV lists |
| Date: | 2018-03-02 17:18:52 |
| Message-ID: | 8dd4c3c8-f75e-8a3f-5854-14819d391897@2ndquadrant.com |
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| Lists: | pgsql-hackers |
On 03/02/2018 04:29 AM, Andres Freund wrote:
> Hi,
>
> On 2018-02-24 23:01:59 +0100, Tomas Vondra wrote:
>> Sadly, this patch series does not seem to move forward very much, and
>> I'm not sure how to change that :-/
>
> What's your estimate about the patchset's maturity?
>
It's dying of old age.
On a more serious note, I think the basics are pretty solid - both the
theory and the code (which mostly builds on what was introduced by the
CREATE STATISTICS thing in PG10).
I'm sure there are things to fix, but I don't expect radical reworks.
There are limitations I'd like to relax (say, allowing expressions
etc.), but those are clearly PG12 stuff at this point.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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