herokuでmysqlを使う

rails heroku mysql 
bash-3.2$ heroku config | grep CLEARDB_DATABASE_URL
CLEARDB_DATABASE_URL => mysql://99676e34db4981:94a12c4d@us-cdbr-east.cleardb.com/heroku_a23c897bcef9bd7?reconnect=true

bash-3.2$ heroku config:add DATABASE_URL='mysql://99676e34db4981:94a12c4d@us-cdbr-east.cleardb.com/heroku_a23c897bcef9bd7?reconnect=true'
Adding config vars and restarting app... done, v6
  DATABASE_URL => mysql://99676e34...7?reconnect=true

おっと、mysql2でやるんだった！！

bash-3.2$ heroku config:add DATABASE_URL='mysql2://99676e34db4981:94a12c4d@us-cdbr-east.cleardb.com/heroku_a23c897bcef9bd7?reconnect=true'
Adding config vars and restarting app... done, v7
  DATABASE_URL => mysql2://99676e3...7?reconnect=true