From: Tom Lane <tgl@sss.pgh.pa.us>
To: Michael Paquier <michael@paquier.xyz>
cc: Peter Eisentraut <peter@eisentraut.org>,
        Alex Guo <guo.alex.hengchen@gmail.com>,
        Bertrand Drouvot <bertranddrouvot.pg@gmail.com>,
        Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>,
        pgsql-hackers@lists.postgresql.org
Subject: Re: Fix DROP PROPERTY GRAPH "unsupported object class" error
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Comments: In-reply-to Michael Paquier <michael@paquier.xyz>
	message dated "Mon, 08 Jun 2026 09:19:54 +0900"
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Date: Sun, 07 Jun 2026 20:28:40 -0400
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Michael Paquier <michael@paquier.xyz> writes:
> + property graph element label  |        |      | e of e of
> create_property_graph_tests.gt
> + property graph element label  |        |      | v1 of v1 of
> create_property_graph_tests.gt
> + property graph element label  |        |      | v2 of v2 of
> create_property_graph_tests.gt
> [...]
> + property graph label property |        |      | c of e of e of
> create_property_graph_tests.gt
> + property graph label property |        |      | k1 of e of e of
> create_property_graph_tests.gt
> + property graph label property |        |      | k2 of e of e of
> create_property_graph_tests.gt

> FWIW, I still find these descriptions written as of "$object of
> $object of..", or worse the "$object1 of $object2 of $object2 of..",
> really hard to parse, and make some sense out of them.  Am I the only
> one?

No.  At the very least, these messages violate our style guidelines [1]:

    Type of the Object =


    When citing the name of an object, state what kind of object it is.

    Rationale: Otherwise no one will know what =E2=80=9Cfoo.bar.baz=E2=80=9D=
 refers to.

I'm not sure whether adding that would be sufficient to make these
intelligible, but surely it would help.  I think your first example
would come out like

    label e of property(?) e of property graph create_property_graph_tests=
.gt

			regards, tom lane

[1] https://www.postgresql.org/docs/current/error-style-guide.html#ERROR-S=
TYLE-GUIDE-OBJECT-TYPE