| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Stephen Frost <sfrost(at)snowman(dot)net> |
| Cc: | Kouhei Kaigai <kaigai(at)ak(dot)jp(dot)nec(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Andres Freund <andres(at)2ndquadrant(dot)com>, PgHacker <pgsql-hackers(at)postgresql(dot)org>, Shigeru Hanada <shigeru(dot)hanada(at)gmail(dot)com>, Jim Mlodgenski <jimmy76(at)gmail(dot)com>, Peter Eisentraut <peter_e(at)gmx(dot)net>, Kohei KaiGai <kaigai(at)kaigai(dot)gr(dot)jp> |
| Subject: | Re: [v9.5] Custom Plan API |
| Date: | 2014-05-08 15:46:11 |
| Message-ID: | CA+U5nMLq97Xti2nWCumtrgOh7fTpvcrLpt0rj0DgnRmkse_8-A@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 8 May 2014 15:25, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
> * Simon Riggs (simon(at)2ndQuadrant(dot)com) wrote:
>> On 8 May 2014 14:40, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
>> > Allow me to re-state your suggestion here:
>> >
>> > An FDW is loaded which provides hook for join push-down (whatever those
>> > end up being).
>> >
>> > A query is run which joins *local* table A to *local* table B. Standard
>> > heaps, standard indexes, all local to this PG instance.
>> >
>> > The FDW which supports join push-down is then passed this join for
>> > planning, with local sub-plans for the local tables.
>>
>> Yes that is correct; thank you for confirming your understanding with me.
>
> I guess for my part, that doesn't look like an FDW any more.
If it works, it works. If it doesn't, we can act otherwise.
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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