> What happens if someone changes the record on the foreign side between when > we've read it and we do the UPDATE? > Concurrency control is job of FDW driver. It has to coordinate access to the records to be fetched for update / delete. In fact, postgres_fdw add "FOR UPDATE" to avoid concurrent update when it issues 1st-stage query to remote server.
Thanks, -- KaiGai Kohei <kai...@kaigai.gr.jp> -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
