Rails - Apr 2006 - Wrapping DDL changes in transactions ?

Hi !

Which database drivers support wrapping DDL changes in transactions ? 
Something like this:

def self.up
  ActiveRecord::Base.transaction do
    create_table(...)
  end
end

I know for certain MySQL does not.  I believe PostgreSQL does.  What
about the other database adapaters ?  Can anyone confirm/deny my
claims ?

Thanks !
--
Fran?ois Beausoleil
http://blog.teksol.info/