| From: | Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr> |
|---|---|
| To: | Atri Sharma <atri(dot)jiit(at)gmail(dot)com> |
| Cc: | Shigeru Hanada <shigeru(dot)hanada(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Bruce Momjian <bruce(at)momjian(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Kohei KaiGai <kaigai(at)kaigai(dot)gr(dot)jp>, Denis Lussier <denis(dot)lussier(at)openscg(dot)com> |
| Subject: | Re: Status of FDW pushdowns |
| Date: | 2013-11-27 23:49:26 |
| Message-ID: | m2y549jth5.fsf@2ndQuadrant.fr |
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| Lists: | pgsql-hackers |
Atri Sharma <atri(dot)jiit(at)gmail(dot)com> writes:
> Can we add a function to the FDW API to define a SQL to foreign server
> side conversion?
I think that's not tenable. Even if you limit the discussion to the
postgres_fdw, some queries against past version will stop working
against new version (keywords changes, catalogs, default settings, etc).
I don't think you want to embed a full parser of every supported FOREIGN
version of PostgreSQL inside the postgres_fdw code, so I think the text
of the view needs to be an opaque string.
--
Dimitri Fontaine
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support
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