On Mon, 2009-08-17 at 14:54 -0400, Tom Lane wrote: > > If so, is it possible that two similar plans for the same query might > > perform differently due to repeated de-toasting? > > Hard to answer that one. What's "similar"?
My only concern is that it's a somewhat hidden optimization (not seen in explain output), and thus a potential performance problem might catch someone by surprise. I don't see how that could happen with this particular patch, but I thought I would bring it up in case someone else does. Regards, Jeff Davis -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers