If you want to get angry, take a look at:
http://www.iemagazine.com/010918/414feat3_1.shtml
You will read a PostgreSQL review that has been made by a man
that didn't even read the documentation (and surely didn't tried
it...). I don't want to say that PostgreSQL is the best DB ever,
but take a look at this:
" Complex SQL, in the form of subqueries and correlated queries,
are largely unsupported" (????)
" However, unlike most commercial databases, users do not have
the ability to create their own stored procedures" (what?)
... and so on... have fun.
Best regards
Andrea Aime