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Re: Showing primitive index scan count in EXPLAIN ANALYZE (for skip scan and SAOP scans) - Mailing list pgsql-hackers

From Robert Haas
Subject Re: Showing primitive index scan count in EXPLAIN ANALYZE (for skip scan and SAOP scans)
Date
Msg-id CA+TgmoZr7gOQ7=6NwxPU9qG2K6N7uij+Oae4_L=evU-awWj3tA@mail.gmail.com
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In response to Re: Showing primitive index scan count in EXPLAIN ANALYZE (for skip scan and SAOP scans)  (Matthias van de Meent <boekewurm+postgres@gmail.com>)
Responses Re: Showing primitive index scan count in EXPLAIN ANALYZE (for skip scan and SAOP scans)
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On Tue, Aug 27, 2024 at 7:22 PM Matthias van de Meent
<boekewurm+postgres@gmail.com> wrote:
> > Besides, I thought that you wanted me to use some new field in
> > BTScanOpaque? But now you want me to use a global counter. Which is
> > it?
>
> If you think it's important to have this info on all indexes then I'd
> prefer the pgstat approach over adding a field in IndexScanDescData.
> If instead you think that this is primarily important to expose for
> nbtree index scans, then I'd prefer putting it in the BTSO using e.g.
> the index AM analyze hook approach, as I think that's much more
> elegant than this.

I agree with this analysis. I don't see why IndexScanDesc would ever
be the right place for this.

--
Robert Haas
EDB: http://www.enterprisedb.com

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