Re: Row pattern recognition

Tatsuo Ishii <ishii@postgresql.org>

From: Tatsuo Ishii <ishii@postgresql.org>

To: jacob.champion@enterprisedb.com

Cc: assam258@gmail.com, david.g.johnston@gmail.com, vik@postgresfriends.org, er@xs4all.nl, peter@eisentraut.org, pgsql-hackers@postgresql.org

Date: 2026-01-05T23:26:15Z

Lists: pgsql-hackers

> On Sun, Jan 4, 2026 at 7:50 AM Henson Choi <assam258@gmail.com> wrote:
>> I've been working on an NFA implementation prototype.
> 
> Neat! In case it helps, you may also be interested in my (now very out
> of date) mails at [1] and [2].
> 
> At one point I was also working on an independent implementation of
> the preferment rules, to make it easier for developers to intuit how
> matches were made, but I can't find that email at the moment.

Maybe this?

https://www.postgresql.org/message-id/CAOYmi%2Bns3kHjC83ap_BCfJCL0wfO5BJ_sEByOEpgNOrsPhqQTg%40mail.gmail.com

Best regards,
--
Tatsuo Ishii
SRA OSS K.K.
English: http://www.sraoss.co.jp/index_en/
Japanese:http://www.sraoss.co.jp

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Adjust cross-version upgrade tests for seg_out() fix
- 3e3d7875e956 19 (unreleased) cited
Rationalize error comments in partition split/merge tests
- ecb2508aaf9b 19 (unreleased) cited
Add fast path for foreign key constraint checks
- 2da86c1ef9b5 19 (unreleased) cited
Fix assorted pretty-trivial memory leaks in the backend.
- e78d1d6d47dc 19 (unreleased) cited
Add temporal FOREIGN KEY contraints
- 89f908a6d0ac 18.0 cited
Add trailing commas to enum definitions
- 611806cd726f 17.0 cited
Remove obsolete executor cleanup code
- d060e921ea5a 17.0 cited