Horton

Re: Using multiple extended statistics for estimates

Tomas Vondra <tomas.vondra@2ndquadrant.com>

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From: Tomas Vondra <tomas.vondra@2ndquadrant.com>
To: Mark Dilger <hornschnorter@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2020-01-13T00:24:15Z
Lists: pgsql-hackers 
Hi,

I've pushed these two improvements after some minor improvements, mostly
to comments. I ended up not using the extra tests, as it wasn't clear to
me it's worth the extra duration.

regards

-- 
Tomas Vondra                  http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

Commits

  1. Apply multiple multivariate MCV lists when possible

  2. Apply all available functional dependencies