| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> |
| Cc: | Etsuro Fujita <fujita(dot)etsuro(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: | 2015-10-14 17:00:35 |
| Message-ID: | CA+TgmoYAyvox4rYE=PCPp7mz_21YOSMpZrLLGL7sWkBnr2pziA@mail.gmail.com |
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On Wed, Oct 14, 2015 at 3:10 AM, Kyotaro HORIGUCHI
<horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> wrote:
> AFAICS, no updated version for remote tables are obtained.
You're right, but that's OK: the previously-obtained tuples fail to
meet the current version of the quals, so there's no problem (that I
can see).
> Even though the behavior I described above is correct, the join
> would fail, too. But it is because v.r is no longer equal to
> bigft2.r in the whole-row-var tuples. This seems seemingly the
> same behavior with that on local tables.
Yeah.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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