Re: Wrong results with grouping sets

Richard Guo <guofenglinux@gmail.com>

From: Richard Guo <guofenglinux@gmail.com>

To: Tom Lane <tgl@sss.pgh.pa.us>

Cc: Andres Freund <andres@anarazel.de>, PostgreSQL-development <pgsql-hackers@postgresql.org>

Date: 2024-07-10T01:11:59Z

Lists: pgsql-hackers

Commits

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Remove the RTE_GROUP RTE if we drop the groupClause
- ffe12d1d22e7 18.0 landed
Mark expressions nullable by grouping sets
- f5050f795aea 18.0 landed
Introduce an RTE for the grouping step
- 247dea89f761 18.0 landed

On Sat, Jul 6, 2024 at 10:37 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Richard Guo <guofenglinux@gmail.com> writes:
> > BTW, from catversion.h I read:
>
> >  * Another common reason for a catversion update is a change in parsetree
> >  * external representation, since serialized parsetrees appear in stored
> >  * rules and new-style SQL functions.  Almost any change in primnodes.h or
> >  * parsenodes.h will warrant a catversion update.
>
> > Since this patchset changes the querytree produced by the parser, does
> > this indicate that a catversion bump is needed?
>
> Yes, it would.

Thank you for confirming.

Thanks
Richard