On Wed, 2010-04-28 at 21:15 -0400, Tom Lane wrote: > I still say > that COR rather than CINE semantics would be appropriate for columns.
Viewed from a locking perspective, I would disagree. COR semantics force a table rewrite, in certain cases. That makes it hard to predict externally how long the command will run for. As a DBA, I would want a command that executes without rewrite (if appropriate) or does nothing. Predictable behaviour is the most important concern. That isn't necessarily an argument in favour of CINE, which seems slightly less clear about what we might expect from that, in my reading at least. -- Simon Riggs www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Training and Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
