# File lib/dm-aggregates/aggregate_functions.rb, line 55
      def min(*args)
        query         = args.last.kind_of?(Hash) ? args.pop : {}
        property_name = args.first

        assert_property_type property_name, Integer, Float, BigDecimal, DateTime, Date, Time

        aggregate(query.merge(:fields => [ property_name.min ]))
      end