From: Ancoron Luciferis <ancoron.luciferis@googlemail.com>
To: pgsql-performance@lists.postgresql.org
Subject: Custom opclass for column statistics?
Date: Sat, 6 Jul 2019 11:02:27 +0200
Message-ID: <b0590dd1-5bfb-ad62-c4d0-a7057c04a68b@googlemail.com> (raw)
Hi,
I've been wondering whether it is possible somehow to have the standard
column statistics to respect a certain operator class?
The reason why I am asking for this is that I have a UUID column with a
unique index at it using a custom operator class which implies a
different sort order than for the default UUID operator class.
This results into planner mistakes when determining whether to use the
index for row selection or not. Too often it falls back into sequential
scan due to this.
Thanx and Cheers,
Ancoron
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Subject: Re: Custom opclass for column statistics?
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