| From: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
|---|---|
| To: | Simen Andreas Andreassen Lønsethagen <simen(dot)lonsethagen(at)fremtind(dot)no> |
| Cc: | pgsql-performance(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Performance of lateral join |
| Date: | 2021-07-26 18:17:45 |
| Message-ID: | 20210726181745.GE23997@telsasoft.com |
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| Lists: | pgsql-performance |
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
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