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