Chris Curvey <ccurvey@zuckergoldberg.com> wrote:
> Perhaps a pair of triggers? An insert-or-update trigger on foo, and a
> delete-or-update trigger on bar?
Using a foreign key constraint is best if that can do the right
thing. If that doesn't work, triggers like you describe are
probably the best option, but you need to cover race conditions.
See this recent post for suggestions:
http://www.postgresql.org/message-id/1406836331.34944.YahooMailNeo@web122303.mail.ne1.yahoo.com
--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
