David Fetter <da...@fetter.org> writes: > On Fri, Mar 28, 2014 at 03:50:10PM +0000, Tom Lane wrote: >> Fix EquivalenceClass processing for nested append relations.
> If this is a bug fix, shouldn't it be back-patched? It's a planner improvement; it's not a bug fix in the sense that previous plans were wrong. We tend to err on the side of not back-patching such changes ... some people complain when minor updates cause plan choices to change under them. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers