Re: Removing unneeded self joins - Mailing list pgsql-hackers

From Alexander Lakhin
Subject Re: Removing unneeded self joins
Date
Msg-id 107682e0-137a-d0fb-2733-7fc6e9562690@gmail.com
Whole thread Raw
In response to Re: Removing unneeded self joins  (Alexander Korotkov <aekorotkov@gmail.com>)
Responses Re: Removing unneeded self joins  (Alexander Korotkov <aekorotkov@gmail.com>)
List pgsql-hackers
Hi Alexander,

23.10.2023 12:47, Alexander Korotkov wrote:
> I think this patch makes substantial improvement to query planning.
> It has received plenty of reviews.  The code is currently in quite
> good shape.  I didn't manage to find the cases when this optimization
> causes significant overhead to planning time.  Even if such cases will
> be spotted there is a GUC option to disable this feature.  So, I'll
> push this if there are no objections.

On a quick glance, I've noticed following typos/inconsistencies in the
patch, which maybe worth fixing:
s/cadidates/candidates/
s/uniquiness/uniqueness/
s/selfjoin/self-join/
s/seperate/separate/

Also, shouldn't the reference "see generate_implied_equalities" be
"see generate_implied_equalities_for_column"?

Best regards,
Alexander



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