On Fri, May 2, 2025 at 11:44 AM Bruce Momjian <bruce@momjian.us> wrote:
>
> I have committd the first draft of the PG 18 release notes.
> I will continue improving it until beta 1, and until the final release.
> I will probably add markup in 1-3 weeks. Let the feedback begin. ;-)
Thanks for working on these.
I'm wondering if we should consider mentioning that several
long-standing issues related to grouping sets have been fixed starting
from PostgreSQL v18. I understand that we typically don't include bug
fixes in the release notes, but these particular issues have been
present since grouping sets were first introduced, and currently they
still exist in the back branches (yeah, for some reason we do not have
back-branch fixes; we only fix them in v18 and going forward).
There have been complaints from users about grouping sets giving
incorrect results in certain cases, which has made them hesitant to
use PostgreSQL for analytical workloads. Since these issues are fixed
in v18, it might be worthwhile to point this out — if only to reassure
users that these issues are no longer a concern going forward.
(FWIW, the related commits are 247dea89f, f5050f795, and cc5d98525).
Thanks
Richard
