MIME-Version: 1.0
References: <CAN3aFCdx8AapWSVpJ1kaC7OC_v7QwbjgbGw9WfPBBY2GMyOadQ@mail.gmail.com>
 <CAN3aFCcx_w5Ldb+SYurwd31es9hOJqLuKARQHHDOk7+5iOqBWQ@mail.gmail.com>
 <CALdSSPhFzYCp=Aa8AAboz6TQaTmjWciQGfrEJQeOOO+0pD1GGw@mail.gmail.com>
 <89DE974B-F318-4D0A-A60B-51EDE84054E2@gmail.com> <9A074422-2308-4BD0-9FFA-0B6D70989935@yandex-team.ru>
 <70c72cb1-a39f-41b3-bfe3-e32ee7fda9c4@uni-muenster.de> <CAN3aFCfdGp6TGTQNOVO1im1u2vO_E2jnTGVV2xhea7eNY7GtuQ@mail.gmail.com>
 <68a012d3-121b-418a-913b-aa0aaf32915d@uni-muenster.de> <CAN3aFCcXwS7BrU1gHRUEBH3G59EVf_7LUhLeEWqW2Sc9Vk5k-A@mail.gmail.com>
 <CAN3aFCe_cBshj0rb7J8yoT+fRHOBOZmk-m8V7DMLDe0ZjSgjcA@mail.gmail.com>
 <ed564b19-a70b-4715-9c65-f58df03bed43@uni-muenster.de> <CAN3aFCc2voQ=6+Nwy99NFJZwveYmwtCKAj6U9RhjxqQc25+Q_g@mail.gmail.com>
 <2898f090-d9cf-475c-940c-a99da4a308f1@uni-muenster.de> <CAN3aFCcUFLbdVBoL6c2bMh4r5P9EnXM9eBsX8+ZyER7YBSDUtA@mail.gmail.com>
 <08052569-9384-41b5-bcb7-33929fcc6c71@uni-muenster.de> <cfd2c12a-41fb-4a8b-9b14-390e53f4c898@uni-muenster.de>
 <ccc35098-a93c-4510-abd9-71d395acdba5@uni-muenster.de> <CAN3aFCecpcPBs4x3KUuxTqvY2VzpCZZKrBphNaQjE5uD8UtEpQ@mail.gmail.com>
In-Reply-To: <CAN3aFCecpcPBs4x3KUuxTqvY2VzpCZZKrBphNaQjE5uD8UtEpQ@mail.gmail.com>
From: Marcos Magueta <maguetamarcos@gmail.com>
Date: Sat, 14 Feb 2026 19:30:47 -0300
Message-ID: <CAN3aFCcb0Nvap1CKShd5RNa+V+pray+ur_LtOON3nkwqdh5NMA@mail.gmail.com>
Subject: Re: WIP - xmlvalidate implementation from TODO list
To: Jim Jones <jim.jones@uni-muenster.de>
Cc: Andrey Borodin <x4mmm@yandex-team.ru>, Kirill Reshke <reshkekirill@gmail.com>, 
	PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Content-Type: multipart/alternative; boundary="000000000000a5db3b064ad0461c"
Archived-At: <https://www.postgresql.org/message-id/CAN3aFCcb0Nvap1CKShd5RNa%2BV%2Bpray%2Bur_LtOON3nkwqdh5NMA%40mail.gmail.com>
Precedence: bulk

--000000000000a5db3b064ad0461c
Content-Type: text/plain; charset="UTF-8"

Hey Jim,

I finally got back to it.

> On second thought, is there any scenario where we'll need a_expr for "y"
> at all in "CREATE XMLSCHEMA x AS y"? Isn't it always going to be a
> string? I see now that my example in the previous post was somewhat
> misleading (sorry for the noise).
I think you are right about removing the alias here, but I thought that on
the previous exchange you were referring to the expression on x, not y.
Nonetheless I see no point in keeping aliases here, however. I added it
because I initially thought of aliasing chained expressions, but that makes
little sense in an effectful command.

> I'd suggest to focus on 0001 for now. Feel free to revert it to the
> state of v4 if you disagree with the current approach.
I am perfectly fine with the split, I think splitting it further will cause
more problems to review because of their interdependency as you pointed out.

It seems that for v6, all that is left is to revise the grant for read and
write, and add the docs. Correct?

If so, I will get started with it.

Regards!

--000000000000a5db3b064ad0461c
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr"><div>Hey=C2=A0Jim,<br><br>I finally got b=
ack to it.<br><br>&gt; On second thought, is there any scenario where we=
9;ll need a_expr for &quot;y&quot;<br>&gt; at all in &quot;CREATE XMLSCHEMA=
 x AS y&quot;? Isn&#39;t it always going to be a<br>&gt; string? I see now =
that my example in the previous post was somewhat<br>&gt; misleading (sorry=
 for the noise).<br>I think you are right about removing the alias here, bu=
t I thought that on the previous exchange you were referring to the=C2=A0ex=
pression on x, not y. Nonetheless I see no point in keeping=C2=A0aliases he=
re, however. I added it because I initially thought of aliasing chained exp=
ressions, but that makes little sense in=C2=A0an effectful command.<br><br>=
</div><div>&gt;=C2=A0I&#39;d suggest to focus on 0001 for now. Feel free to=
 revert it to the<br>&gt; state of v4 if you disagree with the current appr=
oach.<br></div><div>I am perfectly fine with the split, I think splitting i=
t further will cause more problems to review because of their interdependen=
cy as you pointed=C2=A0out.<br><br></div><div>It seems that for v6, all tha=
t is left is to revise the grant for read and write, and add the docs. Corr=
ect?<br><br></div><div>If so, I will get started with it.<br><br></div><div=
>Regards!</div></div></div>

--000000000000a5db3b064ad0461c--