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From: David Rowley <[email protected]>
To: Dimitrios Apostolou <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: [email protected]
Subject: Re: SELECT DISTINCT chooses parallel seqscan instead of indexscan on huge table with 1000 partitions
Date: Tue, 14 May 2024 01:34:05 +1200
Message-ID: <CAApHDvr9_Mu51U6pFoc9EpOP3U_gxjn4-qBBPRTQMW3d3+NXpQ@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
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On Tue, 14 May 2024 at 00:46, Dimitrios Apostolou <[email protected]> wrote:
>
> On Mon, 13 May 2024, Dimitrios Apostolou wrote:
>
> > On Sat, 11 May 2024, David Rowley wrote:
> >>  If you look at [1], it says "Tuples changed in partitions and
> >>  inheritance children do not trigger analyze on the parent table."
> >

> Do I read that correctly, that I have to setup cron jobs to manually
> analyze partitioned tables?

It means that auto-analyze won't touch it.  Periodically doing an
ANALYZE on the partitioned table is probably a good idea.

David

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