Re: dblink: enable parameters - Mailing list pgsql-hackers

From Itagaki Takahiro
Subject Re: dblink: enable parameters
Date
Msg-id CAJW2+qdBegO9Ut30T_06UXn+-gMb4STYhNV=Rex8Tv1fxyNzJw@mail.gmail.com
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In response to Re: dblink: enable parameters  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
Responses Re: dblink: enable parameters
List pgsql-hackers
On Tue, Nov 22, 2011 at 20:09, Heikki Linnakangas
<heikki.linnakangas@enterprisedb.com> wrote:
> It would be nice to add support for SQL/MED "passthrough mode"... That would
> allow you to do any queries/updates to foreign servers. It wouldn't sound
> very difficult at first glance, though I'm not sure what it would mean to
> our parser, for example.

I think passthrough mode is almost impossible or has very limited usage
because we cannot pass query texts that our parser doesn't accept;
we cannot support foreign-table-specific queries.

> On 22.11.2011 06:55, Pavel Stehule wrote:
>> I know so dblink is "deprecated" interface - but it has necessary
>> functionality still -  it support a writable statements.

So, "dblink on FDW connection" seems to be a possible solution.
We pass a query as a form of a plain text.

--
Itagaki Takahiro


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