public inbox for [email protected]  

help / color / mirror / Atom feed

From: Dimitrios Apostolou <[email protected]>
To: Tom Lane <[email protected]>
Cc: [email protected]
Cc: David Rowley <[email protected]>
Subject: Re: SELECT DISTINCT chooses parallel seqscan instead of indexscan on huge table with 1000 partitions
Date: Tue, 14 May 2024 18:14:45 +0200 (CEST)
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>

On Tue, 14 May 2024, Dimitrios Apostolou wrote:
>
> It took long but if finished:
>
> ANALYZE
> Time: 19177398.025 ms (05:19:37.398)

I see now that default_statistics_target is globally set to 500, so this
is probably the reason it took so long. I guess with the default of 100,
it would take approximately one hour. This is much better to have in a
cron job. :-)

Dimitris

view thread (17+ messages)

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected], [email protected], [email protected], [email protected]
  Subject: Re: SELECT DISTINCT chooses parallel seqscan instead of indexscan on huge table with 1000 partitions
  In-Reply-To: <[email protected]>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox