From: Tom Lane <tgl@sss.pgh.pa.us>
To: "David G. Johnston" <david.g.johnston@gmail.com>
cc: Robert Haas <robertmhaas@gmail.com>,
        Alvaro Herrera <alvherre@2ndquadrant.com>,
        Steven Pousty <steve.pousty@gmail.com>,
        Pavel Stehule <pavel.stehule@gmail.com>,
        Isaac Morland <isaac.morland@gmail.com>,
        Pierre Giraud <pierre.giraud@dalibo.com>,
        PostgreSQL Developers <pgsql-hackers@lists.postgresql.org>
Subject: Re: Poll: are people okay with function/operator table redesign?
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Comments: In-reply-to "David G. Johnston" <david.g.johnston@gmail.com>
	message dated "Fri, 17 Apr 2020 15:30:33 -0700"
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Date: Fri, 17 Apr 2020 19:04:51 -0400
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"David G. Johnston" <david.g.johnston@gmail.com> writes:
> I feel like writing them as:
> + (date, integer) -> date
> makes more sense as they are mainly sorted on the operator symbol as
> opposed to the left operand.

Hmm ... we do use that syntax in some fairly-obscure places like
ALTER OPERATOR, but I'm afraid that novice users would just be
completely befuddled.  Maybe the examples would be enough to clarify,
but I'm not convinced.  Especially not for unary operators, where
ALTER OPERATOR would have us write "- (NONE, integer)".

			regards, tom lane