Re: FOREIGN TABLE with dblink

Hi Shigeru,

thank you for responding. This is going to be a great feature!

Regards,
Jasmin

2011/6/29 Shigeru Hanada <shigeru(dot)hanada(at)gmail(dot)com>

> Hi Jasmin,
>
> (2011/06/16 19:40), Jasmin Dizdarevic wrote:
> > Hi,
> >
> > is there any way to use the new foreign table feature with dblink?
> > That's almost clear to me:
> >
> > CREATE FOREIGN DATA WRAPPER pgsql90;
> >
> > CREATE SERVER srvlocal90 FOREIGN DATA WRAPPER pgsql90 OPTIONS (hostaddr
> > '127.0.0.1', dbname 'lotty');
> >
> > CREATE USER MAPPING FOR pgsql SERVER srvlocal90 OPTIONS (user 'pgsql',
> > password '');
> >
> > I would like to replace this
> >
> > SELECT dblink_connect('myconn', 'srvlocal90');
> > SELECT * FROM dblink('myconn', 'select * from mytests.fttest') AS t(id
> int,
> > myname text);
> >
> > to something like this:
> >
> > CREATE FOREIGN TABLE mytests.lnkto90_fttest (
> > id int,
> > myname text
> > )
> > SERVER srvlocal90 OPTIONS (????)
> >
> > SELECT * FROM mytests.lnkto90_fttest;
>
> Your assumption is exactly what the foreign table feature aims at;
> foreign table feature would allow you to access external data via a SQL
> statement which conformed with the SQL statement, though foreign tables
> are read-only in the first release.
>
> But unfortunately FDW for PostgreSQL won't be shipped with 9.1 release.
> Hopefully, PostgreSQL-FDW for 9.1 might be released as an external
> module, and then you would be able to replace dblink with foreign tables.
>
> Regards,
> --
> Shigeru Hanada
>