On Thu, Aug 23, 2012 at 1:10 AM, Kohei KaiGai <kai...@kaigai.gr.jp> wrote: > It is a responsibility of FDW extension (and DBA) to ensure each > foreign-row has a unique identifier that has 48-bits width integer > data type in maximum.
It strikes me as incredibly short-sighted to decide that the row identifier has to have the same format as what our existing heap AM happens to have. I think we need to allow the row identifier to be of any data type, and even compound. For example, the foreign side might have no equivalent of CTID, and thus use primary key. And the primary key might consist of an integer and a string, or some such. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
