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De-duping

  1. #1
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    De-duping

    I have two spreadsheets that contain one column of city names. One spreadsheet contains city names that are currently in my database and the other contains some new names and some that may already be in my database. I need to find only those city names that are new. Assume that my columns are Column A - City Name Column B- Source ("New List" or "Old List"), how do I pick up only those city names that I do not yet have? Would this be through a pivot table? If so, what exactly would I do?

    Thanks
    Last edited by NBVC; 06-09-2010 at 12:51 PM.

  2. #2
    Forum Expert NBVC's Avatar
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    Re: De-duping on Excel. How do I do it??

    In the sheet that contains new and old combined enter a formula in next column like:

    =ISNUMBER(MATCH(A1,'Old List'!A:A,0))

    copied down

    Adjust as necessary.

    The FALSE results, mean they don't exist in the old list and therefore are new names.

    You can use Autofilter through Data|Filter|Autofilter and filter for FALSE in that column, then copy those rows and paste elsewhere... if desired...

    You can also filter for TRUE and delete if you want to get rid of duplicates...
    Where there is a will there are many ways.

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  3. #3
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    Re: De-duping on Excel

    Try this:

    This formula will check to see if any City name in Column B matches or does not match any City Name in Column A.
    Will give you the message "No Match In Col A"

    =IF(ISERROR(MATCH(B1,$A$1:$A$150,0)),"No Match in Col A","")

    This is totally dependent on your two columns being in the same format.

    So Carmel-by-the-Sea is not the same as Carmel by the Sea.

  4. #4
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    Re: De-duping

    Thank you for the responses...it worked!

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