From: | Etsuro Fujita <fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp> |
---|---|
To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Kohei KaiGai <kaigai(at)ak(dot)jp(dot)nec(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, Shigeru Hanada <shigeru(dot)hanada(at)gmail(dot)com> |
Subject: | Re: Foreign join pushdown vs EvalPlanQual |
Date: | 2015-10-16 09:00:45 |
Message-ID: | 5620BCBD.6070309@lab.ntt.co.jp |
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Lists: | pgsql-hackers |
On 2015/10/14 17:31, Etsuro Fujita wrote:
> As KaiGai-san also pointed out before, I think we should address this in
> each of the following cases:
>
> 1) remote qual (scanrelid>0)
> 2) remote join (scanrelid==0)
As for #2, I updated the patch, which uses a local join execution plan
for an EvalPlanQual rechech, according to the comment from Robert [1].
Attached is an updated version of the patch. This is a WIP patch, but
it would be appreciated if I could get feedback earlier.
For tests, apply the patches:
foreign-recheck-for-foreign-join-1.patch
usermapping_matching.patch [2]
add_GetUserMappingById.patch [2]
foreign_join_v16_efujita.patch [3]
Since that as I said upthread, what I'd like to discuss is changes to
the PG core, I didn't do anything about the postgres_fdw patches.
Best regards,
Etsuro Fujita
[1]
http://www.postgresql.org/message-id/CA+TgmoaAzs0dR23R7PTBseQfwOtuVCPNBqDHxeBo9Gi+dMxj8w@mail.gmail.com
[2]
http://www.postgresql.org/message-id/CAEZqfEe9KGy=1_waGh2rgZPg0o4pqgD+iauYaj8wTze+CYJUHg@mail.gmail.com
[3] http://www.postgresql.org/message-id/55CB2D45.7040100@lab.ntt.co.jp
Attachment | Content-Type | Size |
---|---|---|
foreign-recheck-for-foreign-join-1.patch | text/x-patch | 11.3 KB |
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