I wrote: > I'm a bit disturbed by that, because AFAICS from the plans, these queries > did not involve any semi or anti joins, which should mean that the patch > would not have changed the planner's behavior.
After contemplating my navel for awhile, it occurred to me that maybe the patch's changes in add_path_precheck could have caused behavioral changes at the margins. Could you try a run without that (without the last two hunks in pathnode.c)? 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