On Wed, Mar 6, 2013 at 12:35 PM, Pavan Deolasee
<pavan.deolasee@gmail.com> wrote:
> In the context of postgres_fdw, I am not sure if we need an additional
> system column like a node_id. Would there be a possibility where
> tuples to-be-modified are coming from different foreign tables and at
> runtime we need to decide where to execute the UPDATE/DELETE operation
> ? If we start supporting inheritance involving foreign tables as child
> tables, this will become a reality.
Foreign tables have tableoid system column which holds pg_class.oid of
the foreign table. It seems sufficient to determine source server.
--
Shigeru HANADA
