| From: | Stephen Frost <sfrost(at)snowman(dot)net> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Vik Fearing <vik(dot)fearing(at)dalibo(dot)com>, David Rowley <dgrowley(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Thomas Mayer <thomas(dot)mayer(at)student(dot)kit(dot)edu> |
| Subject: | Re: Window function optimisation, allow pushdowns of items matching PARTITION BY clauses |
| Date: | 2014-06-27 01:55:00 |
| Message-ID: | 20140627015500.GR16098@tamriel.snowman.net |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
* Tom Lane (tgl(at)sss(dot)pgh(dot)pa(dot)us) wrote:
> > Why wouldn't it go back all the way to 9.0? (assuming 8.4 is dead)
>
> People get unhappy when minor releases de-optimize queries that had
> been working for them. It's not too late to change the behavior of
> 9.4, but I'm hesitant to do it in already-released branches, especially
> in the absence of any complaints from the field.
Agreed. Back-patching to released versions would likely end up making
for a nasty surprise in a minor point release for some users.
Thanks,
Stephen
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Kyotaro HORIGUCHI | 2014-06-27 03:29:11 | Re: pg_resetxlog to clear backup start/end locations. |
| Previous Message | Tom Lane | 2014-06-27 01:35:11 | Re: Window function optimisation, allow pushdowns of items matching PARTITION BY clauses |