Allan Wang <allanvv@gmail.com> writes:
> No, the tiles row doesn't join with cities:
Uh-huh, so it's the same issue described here:
http://archives.postgresql.org/pgsql-performance/2005-05/msg00219.php
This is fixed in CVS tip but the change was large enough that I'm
disinclined to try to back-port it ...
regards, tom lane