It's hard to know whether your tables will be locked for long periods when implementing DDL changes.
The NOREWRITE option would cause an ERROR if the table would be rewritten by the command. This would allow testing to highlight long running statements before code hits production. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers