Horton

Re: [HACKERS] PATCH: multivariate histograms and MCV lists

Mark Dilger <hornschnorter@gmail.com>

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From: Mark Dilger <hornschnorter@gmail.com>
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>
Cc: Thomas Munro <thomas.munro@enterprisedb.com>, Adrien Nayrat <adrien.nayrat@dalibo.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2018-02-24T22:11:51Z
Lists: pgsql-hackers 
> On Feb 24, 2018, at 2:01 PM, Tomas Vondra <tomas.vondra@2ndquadrant.com> wrote:

> Sadly, this patch series does not seem to move forward very much, and
> I'm not sure how to change that :-/

I'll take a look at the new patch set this evening.  I have been using your
previous version of these patches applied against postgres 10 sources
with good results. 

mark

Commits

  1. Convert pre-existing stats_ext tests to new style

  2. Add support for multivariate MCV lists

  3. Improve ANALYZE's strategy for finding MCVs.

  4. Clone extended stats in CREATE TABLE (LIKE INCLUDING ALL)

  5. Try again to fix accumulation of parallel worker instrumentation.

  6. Adjust psql \d query to avoid use of @> operator.

  7. Message style fixes

  8. Add security checks to selectivity estimation functions