Date: Mon, 26 Jul 2021 13:17:45 -0500
From: Justin Pryzby <pryzby@telsasoft.com>
To: Simen Andreas Andreassen =?iso-8859-1?Q?L=F8nsethagen?=
 <simen.lonsethagen@fremtind.no>
Cc: pgsql-performance@lists.postgresql.org
Subject: Re: Performance of lateral join
Message-ID: <20210726181745.GE23997@telsasoft.com>
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On Mon, Jul 26, 2021 at 01:56:54PM +0000, Simen Andreas Andreassen Lønsethagen wrote:
> To create the subsets, I (or rather my application) will receive lists of records which should be matched according to some business logic. Each of these lists will be read into a temporary table:

Easy first question: is the temp table analyzed before being used in a join ?
(This is unrelated to "explain analyze").

> I am running PostgreSQL 11.9 on x86_64-pc-linux-gnu using AWS Aurora on a db.t3.large instance (https://aws.amazon.com/rds/instance-types/). The output of 
> 	  FROM pg_settings
> is attached in pg_settings.conf.

I think the attachment is missing.

-- 
Justin