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From: Tom Lane <[email protected]>
To: Adrian Klaver <[email protected]>
Cc: Colin 't Hart <[email protected]>
Cc: [email protected]
Subject: Re: Regression in Postgres 17?
Date: Tue, 22 Oct 2024 12:12:46 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <CAMon-aR07TWHZt2QX9QsZQEniyE-6+FdHJSGwyMwvegJSjjNug@mail.gmail.com>
	<[email protected]>

Adrian Klaver <[email protected]> writes:
>> In Postgres 17 trying to create the function yields an error:
>> 
>> pg17> create function json_test(out value text, out json jsonb)
>> returns record
>> ...
>> ERROR:  syntax error at or near "jsonb"
>> LINE 1: create function json_test(out value text, out json jsonb)
>> 
>> Am I doing something wrong? Or is this a regression?

> Yes you are doing something wrong, naming an argument with a type 
> name(json) is not a good idea.

The actual problem is that the SQL standards committee invented
some bizarre syntax that we couldn't parse without making JSON
a partially-reserved word.  It still works as a type name, but
in this particular syntax where it's not initially clear which
names are type names, you lose.  Double-quote the argument name,
or name it something other than "json".

			regards, tom lane

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