| From: | Etsuro Fujita <fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Kouhei Kaigai <kaigai(at)ak(dot)jp(dot)nec(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, "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: | 2015-11-19 03:54:39 |
| Message-ID: | 564D47FF.8070300@lab.ntt.co.jp |
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| Lists: | pgsql-hackers |
On 2015/11/19 12:34, Robert Haas wrote:
> On Tue, Nov 17, 2015 at 9:30 PM, Etsuro Fujita
> <fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp> wrote:
>> I suppose you (and KaiGai-san) are probably right, but I really fail to see
>> it actually doing that.
> Noted, but let's do it that way and move on. It would be a shame if
> we didn't end up with a working FDW join pushdown system in 9.6
> because of a disagreement on this point.
Another idea would be to consider join pushdown as unsupported for now
when select-for-update is involved in 9.5, as described in [1], and
revisit this issue when adding join pushdown to postgres_fdw in 9.6.
Best regards,
Etsuro Fujita
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