rake db:create doesn't create all databases?

I was trying to create a test case in Rails 3.0 RC2 for an entirely
separate question about connecting to external databases via
establish_connection, but ran into a problem with rake db:create.

In short, "rake db:create" only creates two of the four databases listed
in config/database.yml, and I can't figure out why. Here's the
database.yml file. The only thing out of the ordinary is the :external
database specification, but notice that its params are identical to the
others:

========= file: config/database.yml
development:
  adapter: mysql
  encoding: utf8
  reconnect: false
  database: dbtest_development
  pool: 5
  username: root
  password: XYZZY
  socket: /tmp/mysql.sock

external:
  adapter: mysql
  encoding: utf8
  reconnect: false
  database: dbtest_external
  pool: 5
  username: root
  password: XYZZY
  socket: /tmp/mysql.sock

test:
  adapter: mysql
  encoding: utf8
  reconnect: false
  database: dbtest_test
  pool: 5
  username: root
  password: XYZZY
  socket: /tmp/mysql.sock

production:
  adapter: mysql
  encoding: utf8
  reconnect: false
  database: dbtest_production
  pool: 5
  username: root
  password: XYZZY
  socket: /tmp/mysql.sock
========= EOF

But rake db:create only creates the _development and _test databases,
not the _external nor _production. Here's the synopsis. My db BEFORE:

crap. nebbermind. i was reading the wrong piece of code; all i really
needed to do was:

  rake db:create:all

and all is happy. pardon the noise (but maybe my experience will help
someone else in the future).

- ff