| From: | Andrey Borodin <amborodin86(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: GROUP BY ALL |
| Date: | 2022-12-19 04:40:00 |
| Message-ID: | CAAhFRxiA_K6b4ps30Q623z7Xvc+whsr4wfKmtH0Vshsg3B7ThA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sun, Dec 18, 2022 at 8:30 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> I'm not especially on board with "ALL" meaning "ALL (oh, but not
> aggregates)".
Yes, that's the weak part of the proposal. I even thought about
renaming it to "GROUP BY SOMEHOW" or even "GROUP BY SURPRISE ME".
I mean I see some cases when it's useful and much less cases when it's
dangerously ambiguous. E.g. grouping by result of a subquery looks way
too complex and unpredictable. But with simple Vars... what could go
wrong?
Best regards, Andrey Borodin.
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