Re: First draft of PG 17 release notes - Mailing list pgsql-hackers

On Sat, May 11, 2024 at 01:27:25PM +0800, Andy Fan wrote:
> 
> Hello Bruce,
> 
> > I have committed the first draft of the PG 17 release notes;  you can
> > see the results here:
> >
> >     https://momjian.us/pgsql_docs/release-17.html
> 
> Thank you for working on this!
> 
> > I welcome feedback.  For some reason it was an easier job than usual.
> 
> Do you think we need to add the following 2 items?
> 
> - 9f133763961e280d8ba692bcad0b061b861e9138 this is an optimizer
>   transform improvement.

It was unclear from the commit message exactly what user-visible
optimization this allowed.  Do you have details?

> - a8a968a8212ee3ef7f22795c834b33d871fac262 this is an optimizer costing
>   improvement.

Does this allow faster UNION ALL with LIMIT, perhaps?

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  Only you can decide what is important to you.