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From: Lok P <[email protected]>
To: sud <[email protected]>
Cc: pgsql-general <[email protected]>
Subject: Re: Creating big indexes
Date: Sun, 9 Jun 2024 10:39:01 +0530
Message-ID: <CAKna9VYFnmcj0m4FtfMsEQbW8-5QSg8=najLbs-DBHMwtDR=DQ@mail.gmail.com> (raw)
In-Reply-To: <CAD=mzVXtgnFxk0uE6=yaJX8JYY6kt4UiUc-kqi=MyUOCmWp3hg@mail.gmail.com>
References: <CAKna9VaOt_FPSSdMQaF0abiAPLdN1jB9renORV+ky2mP1_nDRw@mail.gmail.com>
	<CAD=mzVXtgnFxk0uE6=yaJX8JYY6kt4UiUc-kqi=MyUOCmWp3hg@mail.gmail.com>

On Sun, Jun 9, 2024 at 10:36 AM sud <[email protected]> wrote:

>
>  You can first create the index on the table using the "On ONLY"keyword,
> something as below.
>
> CREATE INDEX idx ON ONLY tab(col1);
>
> Then create indexes on each partition in "concurrently" from multiple
> sessions in chunks.
>
> CREATE INDEX CONCURRENTLY idx_1    ON tab_part1(col1);
> CREATE INDEX CONCURRENTLY idx_2    ON tab_part2(col1);
>
> After this step finishes the table level index which was created in the
> first step will be in valid state automatically.
>
>
Thank you so much.
Should we also tweak the parameters related to the parallelism and memory
as I mentioned in the first post?

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