| From: | Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Imai Yoshikazu <yoshikazu_i443(at)live(dot)jp>, "jesper(dot)pedersen(at)redhat(dot)com" <jesper(dot)pedersen(at)redhat(dot)com>, "Imai, Yoshikazu" <imai(dot)yoshikazu(at)jp(dot)fujitsu(dot)com>, "'Amit Langote'" <amitlangote09(at)gmail(dot)com>, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: speeding up planning with partitions |
| Date: | 2019-03-27 04:50:59 |
| Message-ID: | 379243a6-33d5-af38-43c9-37120a0893bd@lab.ntt.co.jp |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 2019/03/27 12:06, Amit Langote wrote:
> I wonder if I should rework inherit.c so that its internal interfaces
> don't pass around parent Relation, but make do with the RelOptInfo? I'll
> need to add tupdesc and reltype fields to RelOptInfo to go ahead with that
> though.
To give more context on the last sentence, the only place we need the
TupleDesc for is make_inh_translation_list(). Maybe, instead of adding
tupdesc to RelOptInfo, we could add a List of Vars of all attributes of a
table. To avoid the overhead of always setting it, maybe we could set it
only for inheritance parent tables. Adding tupdesc to RelOptInfo might be
a hard sell to begin with, because it would need to be pinned and then
released at the end of planning.
I'll see if I can make this work.
Thanks,
Amit
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Chapman Flack | 2019-03-27 05:05:27 | Re: Fix XML handling with DOCTYPE |
| Previous Message | Tsunakawa, Takayuki | 2019-03-27 04:41:05 | RE: Libpq support to connect to standby server as priority |