# File lib/active_record/connection_adapters/abstract_adapter.rb, line 321
      def quote(value, column = nil)
        case value
          when String
            if column && column.type == :binary
              "'#{quote_string(column.string_to_binary(value))}'" # ' (for ruby-mode)
            else
              "'#{quote_string(value)}'" # ' (for ruby-mode)
            end
          when NilClass              then "NULL"
          when TrueClass             then (column && column.type == :boolean ? "'t'" : "1")
          when FalseClass            then (column && column.type == :boolean ? "'f'" : "0")
          when Float, Fixnum, Bignum then value.to_s
          when Date                  then "'#{value.to_s}'"
          when Time, DateTime        then "'#{value.strftime("%Y-%m-%d %H:%M:%S")}'"
          else                            "'#{quote_string(value.to_yaml)}'"
        end
      end