quote

# File activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 240
      def quote(value, column = nil)
        if value.kind_of?(String) && column && column.type == :binary && column.class.respond_to?(:string_to_binary)
          s = column.class.string_to_binary(value).unpack("H*")[0]
          "x'#{s}'"
        elsif value.kind_of?(BigDecimal)
          value.to_s("F")
        else
          super
        end
      end