Rails mysql to csv with no backing models

gistfile1.rb

ActiveRecord::Base.connection.tables.each{ |table|
  headers = ActiveRecord::Base.connection.execute("Select * from #{table} LIMIT 1").fields
  CSV.open("#{table}.csv", "wb") do |csv|
    csv << headers
    ActiveRecord::Base.connection.execute("Select * from #{table}").each{ |row|
      csv << row
    }
  end
}