| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: partitioned tables referenced by FKs |
| Date: | 2019-03-19 13:37:00 |
| Message-ID: | 20190319133700.GA9899@alvherre.pgsql |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 2019-Mar-14, Robert Haas wrote:
> On Thu, Mar 14, 2019 at 3:36 PM Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> wrote:
> > In any case, since the RI
> > queries are run via SPI, any unnecessary partitions should get pruned by
> > partition pruning based on each partition's constraint. So I'm not so
> > certain that this is a problem worth spending much time/effort/risk of
> > bugs on.
>
> I doubt that partition pruning would just automatically DTRT in a case
> like this, but if I'm wrong, great!
Uh, it was you that came up with the partition pruning system, so of
course it DsTRT.
I did test (some of?) the queries issued by ri_triggers with partitioned
tables on the PK side, and indeed it seemed to me that partitions were
being pruned at the right times.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Maksim Milyutin | 2019-03-19 13:45:17 | Re: Feature improvement: can we add queryId for pg_catalog.pg_stat_activity view? |
| Previous Message | Dmitry Dolgov | 2019-03-19 13:30:16 | Re: [HACKERS] [PATCH] Generic type subscripting |