Dave Johansen <davejohansen@xxxxxxxxx> writes: > On Fri, May 22, 2015 at 3:42 PM, Tom Lane <tgl@xxxxxxxxxxxxx> wrote: >> What PG version are you using? 9.1 or newer should know how to do this >> with a merge append of several indexscans. > Sorry, I should have mentioned that in the original email. I'm using 8.4.20 > on RHEL 6. From your reply, it sounds like this is the expected behavior > for 8.4 and 9.0. Is that the case? Yeah, pre-9.1 is not very bright about that. You could factor the query manually, perhaps, though it's surely a pain in the neck. regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
