order

# File activerecord/lib/arel/select_manager.rb, line 172
    def order(*expr)
      # FIXME: We SHOULD NOT be converting these to SqlLiteral automatically
      @ast.orders.concat expr.map { |x|
        STRING_OR_SYMBOL_CLASS.include?(x.class) ? Nodes::SqlLiteral.new(x.to_s) : x
      }
      self
    end