当我尝试rake db：创建我得到以下

Couldn’t create database for
{“adapter”=>”MysqL”,
“database”=>”war_development”,
“username”=>”root”,“password”=>nil,
“host”=>”localhost”},charset: utf8,
collation: utf8_unicode_ci (if you set
the charset manually,make sure you
have a matching collation)

我的database.yml有以下开发

development:
  adapter: MysqL
  database: war_development
  username: root
  password: 
  host: localhost

任何想法出了什么问题？

谢谢,

谭