Re: Row pattern recognition

From: Henson Choi <assam258(at)gmail(dot)com>
To: Tatsuo Ishii <ishii(at)postgresql(dot)org>
Cc: jian(dot)universality(at)gmail(dot)com, zsolt(dot)parragi(at)percona(dot)com, sjjang112233(at)gmail(dot)com, vik(at)postgresfriends(dot)org, er(at)xs4all(dot)nl, jacob(dot)champion(at)enterprisedb(dot)com, david(dot)g(dot)johnston(at)gmail(dot)com, peter(at)eisentraut(dot)org, li(dot)evan(dot)chao(at)gmail(dot)com, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Row pattern recognition
Date: 2026-09-08 00:11:29
Message-ID: CAAAe_zA7pvzOPG0bPV3c=SPmAsVZA1_mGte=3r+pR1nxUnZ6PA@mail.gmail.com
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Hi Tatsuo,

> I will look into these after finishing post patch release review for
> v51.

Thank you. I could use the pause myself, so please take the time you
need.

Looking back, while fixing a great many defects I have been sending
patches faster than I explained them. That may have been a burden
for you, and I am sorry for it.

With this increment every problem we know about is resolved. I think
what comes after it should be the finishing stage rather than another
round of fixes.

Rather than holding them for the next posting, I will write up
separately the things I am still not sure about -- whether they can be
improved, or whether they are limits of the design or of the structure
itself.

I will also carry on verifying the feature, to see whether there are
defects we have not found yet.

Beyond that, I think the maintainability side needs enough attention
to be properly finished:

- unifying the RP/RPR prefix
- separating the NFA matcher structures in preparation for R010
- polishing small usability details
- cleaning up the error messages
- cleaning up the comments and the documentation

There is no hurry on this. Your view on which of these to take first
can wait until you post v52.

Best regards,
Henson

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