type_cast_calculated_value

# File activerecord/lib/active_record/relation/calculations.rb, line 385
      def type_cast_calculated_value(value, type, operation = nil)
        case operation
        when "count"   then value.to_i
        when "sum"     then type.deserialize(value || 0)
        when "average" then value && value.respond_to?(:to_d) ? value.to_d : value
        else type.deserialize(value)
        end
      end