Wei Weng <wweng(at)kencast(dot)com> writes:
> But how do I write the LEFT OUTER JOIN if I don't do explicit JOINs on
> the other tables?
See the manual: there's a relevant example near the bottom of
http://www.postgresql.org/users-lounge/docs/7.2/postgres/explicit-joins.html
but you'd do well to study that whole page...
regards, tom lane