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help / color / mirror / Atom feedFrom: Färber, Franz-Josef (StMUK) <Franz-Josef.Faerber@stmuk.bayern.de>
To: pgsql-hackers@lists.postgresql.org <pgsql-hackers@lists.postgresql.org>
Cc: David G. Johnston <david.g.johnston@gmail.com>
Cc: Adrian Klaver <adrian.klaver@aklaver.com>
Subject: WG: AW: Extract text from XML, pay attention to XML Entities
Date: Wed, 30 Sep 2026 08:38:58 +0000
Message-ID: <9bc204234fb842eda58d36e7e45a0280@stmuk.bayern.de> (raw)
In-Reply-To: <ed34652f-62ad-4b64-a12f-cb4640dfeeeb@aklaver.com>
References: <615fa488caa2422393498300d476dcc0@stmuk.bayern.de>
<4ba2604dc46b4f58ad500febc7f6e895@stmuk.bayern.de>
<CAKFQuwYa3reOXUAtf_CqBbC5P1FOwyzrkFK0uxochhcpGXrx-A@mail.gmail.com>
<ed1a375c6fe6475892ac1e222cb463bd@stmuk.bayern.de>
<ed34652f-62ad-4b64-a12f-cb4640dfeeeb@aklaver.com>
Dear Mailing List,
this is a re-post of https://www.postgresql.org/message-id/615fa488caa2422393498300d476dcc0%40stmuk.bayern.de .
Thanks to Adrian Klaver, who pointed out here that this question could be right on this mailing list.
To sum up the discussion,
* The xml2 extension contains the function xml_string, which allows to extract text nodes, thereby un-escaping XML, i. e. " foo < bar" becomes "foo < bar".
* (But the xml2 xml_string function won't deal with namespaces as far as I understand.)
* This functionality is missing in the newer API (see the first link for more elaboration on that).
* And as https://www.postgresql.org/docs/current/xml2.html states, " please explain your issue to <pgsql-hackers@lists.postgresql.org> so that the deficiency can be addressed".
Any suggestions or any plans to add similar functionality to the newer API?
Thank You.
Regards,
Franz-Josef Färber
-----Ursprüngliche Nachricht-----
Von: Adrian Klaver <adrian.klaver@aklaver.com>
Gesendet: Dienstag, 29. September 2026 17:49
An: Färber, Franz-Josef (StMUK) <Franz-Josef.Faerber@stmuk.bayern.de>; David G. Johnston <david.g.johnston@gmail.com>
Cc: pgsql-general@lists.postgresql.org
Betreff: Re: AW: Extract text from XML, pay attention to XML Entities
On 9/29/26 6:12 AM, Färber, Franz-Josef (StMUK) wrote:
> Hello David,
>
> Thanks for your reply.
>
> It’s just strange and unfortunate that
>
> a) Postgres does not offer a simple solution
I think you are left with from here:
https://www.postgresql.org/docs/current/xml2.html
"If you find that some of the functionality of this module is not available in an adequate form with the newer API, please explain your issue to <pgsql-hackers@lists.postgresql.org> so that the deficiency can be addressed."
>
> b) Postgres had indeed offered a simple solution, xml_string, in the
> xml2 extension, which is deprecated (and won't deal with namespaces).
>
> Regards,
>
> Franz-Josef Färber
--
Adrian Klaver
adrian.klaver@aklaver.com
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Cc: Franz-Josef.Faerber@stmuk.bayern.de, pgsql-hackers@lists.postgresql.org, david.g.johnston@gmail.com, adrian.klaver@aklaver.com
Subject: Re: WG: AW: Extract text from XML, pay attention to XML Entities
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