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In-Reply-To: <20260502.140304.670813149418899420.ishii@postgresql.org>
Reply-To: assam258@gmail.com
From: Henson Choi <assam258@gmail.com>
Date: Sun, 3 May 2026 14:34:47 +0900
Message-ID: 
 <CAAAe_zAMKtkv4i5nFhChPwR6xOjkh9sLfzSS7nW-agZwBcuHSQ@mail.gmail.com>
Subject: Re: Row pattern recognition
To: Tatsuo Ishii <ishii@postgresql.org>, peter@eisentraut.org,
 vik@postgresfriends.org,
	zsolt.parragi@percona.com, er@xs4all.nl, li.evan.chao@gmail.com
Cc: Jacob Champion <jacob.champion@enterprisedb.com>,
 david.g.johnston@gmail.com,
	=?UTF-8?B?7J6l7ISx7KSA?= <sjjang112233@gmail.com>,
	pgsql-hackers <pgsql-hackers@postgresql.org>
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Hi Tatsuo, hi hackers,

I'd like to ask for a bit of review help before PGConf.dev 2026
(Vancouver, May 19=E2=80=9322).

For the SQL/RPR R020 poster going on display at the conference, I
have prepared a companion deep-dive page to sit behind the on-site
QR code, building on the patch series Tatsuo has been driving in
this thread:

  https://assam258-5892.github.io/postgresql/rpr/

It walks through the standard scope (R010 vs R020), worked examples,
NFA semantics, navigation functions, parser-to-executor design and
pruning rules, plus an interactive NFA simulator. To widen reach,
the page is also available in 23 AI-pretranslated languages from
the switcher:
=D8=A7=D9=84=D8=B9=D8=B1=D8=A8=D9=8A=D8=A9, =C4=8Ce=C5=A1tina, Dansk, Deuts=
ch, Espa=C3=B1ol, Suomi, Fran=C3=A7ais,
=D7=A2=D7=91=D7=A8=D7=99=D7=AA, Magyar, Italiano, =E6=97=A5=E6=9C=AC=E8=AA=
=9E, =ED=95=9C=EA=B5=AD=EC=96=B4, Nederlands, Norsk,
Polski, Portugu=C3=AAs (BR), Rom=C3=A2n=C4=83, =D0=A0=D1=83=D1=81=D1=81=D0=
=BA=D0=B8=D0=B9, Sloven=C4=8Dina, Svenska,
T=C3=BCrk=C3=A7e, =E4=B8=AD=E6=96=87 (=E7=AE=80=E4=BD=93), =E7=B9=81=E9=AB=
=94=E4=B8=AD=E6=96=87.
Each translated page carries a clear "AI pre-translated, errors
possible" notice.

The ask (light, entirely optional):

  - English original has had one review pass; Korean I reviewed
    myself.
  - Tatsuo =E2=80=94 if you ever find a free moment, a quick glance at the
    Japanese version would be very much appreciated, but absolutely
    no rush.
  - Native speakers of any of the other 22 languages =E2=80=94 incidental
    corrections welcome (this thread or off-list), but nothing is
    expected.

References (also linked from the deep-dive page):
  - thread:
https://www.postgresql.org/message-id/flat/20230625.210509.1276733411677577=
841.t-ishii%40sranhm.sra.co.jp
  - latest patch (v47):
https://postgr.es/m/20260502.140304.670813149418899420.ishii@postgresql.org
  - commitfest #4460: https://commitfest.postgresql.org/patch/4460/

Best regards,
Henson

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<div dir=3D"ltr"><div dir=3D"ltr">Hi Tatsuo, hi hackers,<br><br>I&#39;d lik=
e to ask for a bit of review help before PGConf.dev 2026<br>(Vancouver, May=
 19=E2=80=9322).<br><br>For the SQL/RPR R020 poster going on display at the=
 conference, I<br>have prepared a companion deep-dive page to sit behind th=
e on-site<br>QR code, building on the patch series Tatsuo has been driving =
in<br>this thread:<br><br>=C2=A0 <a href=3D"https://assam258-5892.github.io=
/postgresql/rpr/">https://assam258-5892.github.io/postgresql/rpr/</a><br><b=
r>It walks through the standard scope (R010 vs R020), worked examples,<br>N=
FA semantics, navigation functions, parser-to-executor design and<br>prunin=
g rules, plus an interactive NFA simulator. To widen reach,<br>the page is =
also available in 23 AI-pretranslated languages from<br>the switcher:<br>=
=D8=A7=D9=84=D8=B9=D8=B1=D8=A8=D9=8A=D8=A9, =C4=8Ce=C5=A1tina, Dansk, Deuts=
ch, Espa=C3=B1ol, Suomi, Fran=C3=A7ais,<br>=D7=A2=D7=91=D7=A8=D7=99=D7=AA, =
Magyar, Italiano, =E6=97=A5=E6=9C=AC=E8=AA=9E, =ED=95=9C=EA=B5=AD=EC=96=B4,=
 Nederlands, Norsk,<br>Polski, Portugu=C3=AAs (BR), Rom=C3=A2n=C4=83, =D0=
=A0=D1=83=D1=81=D1=81=D0=BA=D0=B8=D0=B9, Sloven=C4=8Dina, Svenska,<br>T=C3=
=BCrk=C3=A7e, =E4=B8=AD=E6=96=87 (=E7=AE=80=E4=BD=93), =E7=B9=81=E9=AB=94=
=E4=B8=AD=E6=96=87.<br>Each translated page carries a clear &quot;AI pre-tr=
anslated, errors<br>possible&quot; notice.<br><br>The ask (light, entirely =
optional):<br><br>=C2=A0 - English original has had one review pass; Korean=
 I reviewed<br>=C2=A0 =C2=A0 myself.<br>=C2=A0 - Tatsuo =E2=80=94 if you ev=
er find a free moment, a quick glance at the<br>=C2=A0 =C2=A0 Japanese vers=
ion would be very much appreciated, but absolutely<br>=C2=A0 =C2=A0 no rush=
.<br>=C2=A0 - Native speakers of any of the other 22 languages =E2=80=94 in=
cidental<br>=C2=A0 =C2=A0 corrections welcome (this thread or off-list), bu=
t nothing is<br>=C2=A0 =C2=A0 expected.<br><br>References (also linked from=
 the deep-dive page):<br>=C2=A0 - thread: <a href=3D"https://www.postgresql=
.org/message-id/flat/20230625.210509.1276733411677577841.t-ishii%40sranhm.s=
ra.co.jp">https://www.postgresql.org/message-id/flat/20230625.210509.127673=
3411677577841.t-ishii%40sranhm.sra.co.jp</a><br>=C2=A0 - latest patch (v47)=
: <a href=3D"https://postgr.es/m/20260502.140304.670813149418899420.ishii@p=
ostgresql.org">https://postgr.es/m/20260502.140304.670813149418899420.ishii=
@postgresql.org</a><br>=C2=A0 - commitfest #4460: <a href=3D"https://commit=
fest.postgresql.org/patch/4460/">https://commitfest.postgresql.org/patch/44=
60/</a><br><br>Best regards,<br>Henson<br></div>
</div>

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