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type_cast_calculated_value(value, type, operation = nil) private

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# File activerecord/lib/active_record/relation/calculations.rb, line 377
    def type_cast_calculated_value(value, type, operation = nil)
      case operation
        when 'count'   then value.to_i
        when 'sum'     then type.type_cast_from_database(value || 0)
        when 'average' then value.respond_to?(:to_d) ? value.to_d : value
        else type.type_cast_from_database(value)
      end
    end
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