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From: David Barbour <[email protected]>
To: Jon Zeppieri <[email protected]>
Cc: Igor Korot <[email protected]>
Cc: Christophe Pettus <[email protected]>
Cc: Adrian Klaver <[email protected]>
Cc: pgsql-generallists.postgresql.org <[email protected]>
Subject: Re: Get info about the index
Date: Mon, 28 Jul 2025 08:19:56 -0500
Message-ID: <CAEMHB2QQpfxjbqbyB6zy+TMv9zf42tavLuYUSxDXgyZEaq46Xg@mail.gmail.com> (raw)
In-Reply-To: <CAKfDxxw=4Vax5Oq0apoAE=RkzNgHwvHzKX1ejE6z7n7_vtGBUQ@mail.gmail.com>
References: <CA+FnnTw2ouEQKSKzQ_SNo8efWE8wEqjr9Ux-F-wbR+y=Pn6bGg@mail.gmail.com>
	<[email protected]>
	<CA+FnnTyKb0cLp9GF3YENoBZ4LVW3db_RSGR99BPFnA4BZtc8kQ@mail.gmail.com>
	<[email protected]>
	<CA+FnnTy8bdXxFZBmFfm1oNMQLVxL-+UmkX8EecbLB0MehX8gFw@mail.gmail.com>
	<CAKfDxxw=4Vax5Oq0apoAE=RkzNgHwvHzKX1ejE6z7n7_vtGBUQ@mail.gmail.com>

Couple of suggestions.  You might try ChatGPT.  I've had some success using
this tool to uncover improvements to the use of indexes.  The other would
be to look at https://explain.depesz.com/.  It's pretty self-explanatory.
You run an explain plan and paste the results into the tool and it will run
an automated analysis.

On Sat, Jul 26, 2025 at 2:51 PM Jon Zeppieri <[email protected]> wrote:

> On Sat, Jul 26, 2025 at 3:13 PM Igor Korot <[email protected]> wrote:
> >
> > I didn't find the sorting for the field.
> >
> > Can you help?
>
> The pg_index_column_has_property() can provide this information. E.g.,
>
> select pg_index_column_has_property('my_index'::regclass, 2, 'desc');
>
>
>


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