On Sat, 2009-10-17 at 21:41 -0400, Tom Lane wrote: > one thing we'd have to consider > is whether it is okay to suppress calculation of columns containing > volatile functions. I think we should have a 4th class of functions, volatile-without-side-effects (better name needed, obviously). That would allow us to optimize such calls away, if appropriate. -- Simon Riggs www.2ndQuadrant.com -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance