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type_cast_calculated_value(value, column, operation = nil) private

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# File activerecord/lib/active_record/relation/calculations.rb, line 262
    def type_cast_calculated_value(value, column, operation = nil)
      if value.is_a?(String) || value.nil?
        case operation
          when 'count'   then value.to_i
          when 'sum'     then type_cast_using_column(value || '0', column)
          when 'average' then value.try(:to_d)
          else type_cast_using_column(value, column)
        end
      else
        value
      end
    end
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