From: Tomas Vondra <tomas.vondra@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Use multi-variate MCV lists to estimate ScalarArrayOpExpr
Date: Sat, 14 Mar 2020 15:15:43 +0000
Message-ID: <E1jD8Vr-0007rw-Qa@gemulon.postgresql.org> (raw)
Use multi-variate MCV lists to estimate ScalarArrayOpExpr
Commit 8f321bd16c added support for estimating ScalarArrayOpExpr clauses
(IN/ANY) clauses using functional dependencies. There's no good reason
not to support estimation of these clauses using multi-variate MCV lists
too, so this commits implements that. That makes the behavior consistent
and MCV lists can estimate all variants (ANY/ALL, inequalities, ...).
Author: Tomas Vondra
Review: Dean Rasheed
Discussion: https://www.postgresql.org/message-id/flat/13902317.Eha0YfKkKy%40pierred-pdoc
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/e83daa7e331e0718bb254ab685f2ed95df423554
Modified Files
--------------
src/backend/statistics/extended_stats.c | 66 +++++++++++++-
src/backend/statistics/mcv.c | 111 ++++++++++++++++++++++-
src/include/statistics/extended_stats_internal.h | 4 +-
src/test/regress/expected/stats_ext.out | 60 ++++++++++++
src/test/regress/sql/stats_ext.sql | 20 ++++
5 files changed, 252 insertions(+), 9 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: tomas.vondra@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Use multi-variate MCV lists to estimate ScalarArrayOpExpr
In-Reply-To: <E1jD8Vr-0007rw-Qa@gemulon.postgresql.org>
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