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From: Vik Fearing <[email protected]>
To: Tom Lane <[email protected]>
To: Peter Eisentraut <[email protected]>
Cc: David Christensen <[email protected]>
Cc: Andrey Borodin <[email protected]>
Cc: pgsql-hackers <[email protected]>
Cc: David G. Johnston <[email protected]>
Cc: Jelte Fennema-Nio <[email protected]>
Subject: Re: [PATCH] GROUP BY ALL
Date: Sat, 27 Sep 2025 20:14:58 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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	<[email protected]>
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	<[email protected]>


On 27/09/2025 18:03, Tom Lane wrote:
> So according to the standard, this:
>
> 	select a+b, count(*) from ... group by all;
>
> would be invalid because a+b couldn't be written directly in
> GROUP BY?


Correct.


> I can't see us rejecting that though, since we do
> allow a+b in GROUP BY.


No, nor do I.  Also, there were rumors about adding expressions to group 
by in the standard but no formal proposal yet.


FWIW, I opposed adding this GROUP BY ALL feature, but I was 
outnumbered.  I hope to never see it in production.

-- 

Vik Fearing






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