• Count unique codes in a column (Excel 97)

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    WSMease
    AskWoody Lounger
    December 20, 2001 at 7:14 pm #364407

    I’ve got a column of codes for products. For instance, L879 would be a code. Sometimes the same code will get used twice in a column but I only want to count it once. I need the count of unique items in my list to know how many products I’m dealing with.

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    • WSBobUmlas
      AskWoody Lounger
      December 20, 2001 at 7:21 pm #559326

      Ctrl/Shift/Enter:
      =SUM(1/COUNTIF(range,range))
      where range is the range of cells you want to count unique items.

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      • WSMease
        AskWoody Lounger
        December 20, 2001 at 7:45 pm #559331

        Says there are too few arguments to complete. Wants a criteria for the COUNTIF function. Am I reading your formula wrong?

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        • WSBobUmlas
          AskWoody Lounger
          December 20, 2001 at 7:46 pm #559333

          Maybe — did you enter it with the range TWICE? Like
          =SUM(1/COUNTIF(A1:A100,A1:A100))
          and ctrl/shift/enter?

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