|From:||Michael Paquier <michael(at)paquier(dot)xyz>|
|To:||Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>|
|Cc:||Etsuro Fujita <fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, ashutosh(dot)bapat(at)enterprisedb(dot)com, alvherre(at)2ndquadrant(dot)com, robertmhaas(at)gmail(dot)com, pgsql-hackers(at)postgresql(dot)org|
|Subject:||Re: Problem while updating a foreign table pointing to a partitioned table on foreign server|
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On Fri, Nov 16, 2018 at 01:35:15PM -0500, Tom Lane wrote:
> I wonder whether we'd be better off thinking of a way to let FDWs
> invent additional system column IDs for their tables, so that
> something like a remote table OID could be represented in the
> natural way as a Var with negative varattno. This'd potentially
> also be a win for FDWs whose underlying storage has a row identifier,
> but it's not of type "tid". Instead of trying to shoehorn their
> row ID into SelfItemPointerAttributeNumber, they could define a
> new system column that has a more appropriate data type. Admittedly
> there'd be some infrastructure work to do to make this happen, maybe
> a lot of it; but it's a bullet we really need to bite at some point.
This patch got zero input for the last couple of months. As it is
classified as bug fix, I have moved it to next CF, waiting on author.
Fujita-san, are you planning to look at it?
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