Mark Priest <mark.priest@xxxxxxxxxxxx> writes: > However, I am still curious as to why I am getting an out of memory > error. I can see how the performance might be terrible on such a > query but I am surprised that postgres doesn't start using the disk at > some point to reduce memory usage. Could it be that postgres tries > to keep temp tables in memory? You're running out of memory in the planner, long before execution ever happens. (This is apparent from the memory map, but I also verified it with a debugger yesterday.) There really isn't any alternative but to change the form of the query or upgrade to a newer PG. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general