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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Lars Bergeson <larsavatar@gmail.com>
Cc: Justin Pryzby <pryzby@telsasoft.com>
Cc: David G. Johnston <david.g.johnston@gmail.com>
Cc: pgsql-performance@lists.postgresql.org
Subject: Re: Query is slower with a large proportion of NULLs in several columns
Date: Tue, 21 Dec 2021 18:07:52 -0500
Message-ID: <166329.1640128072@sss.pgh.pa.us> (raw)
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Lars Bergeson <larsavatar@gmail.com> writes:
> I'm running PostgreSQL under AWS Aurora, and I didn't set it up or install
> it, so I'm not sure about the OS version.

Oh!  Aurora is not Postgres.  My admittedly-not-well-informed
understanding is that they stuck a Postgres front end on their
existing storage engine, so it's not surprising if storage-level
behaviors are quite different from stock Postgres.

			regards, tom lane





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