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Excel Duplicate Search

Posted on 2014-04-15
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I have a spread sheet with 14k entries containing first name, last name, city, and email address.  I want to flag duplicates.  My thought was to place an "x" in column E next to all duplicate entries.  I am having trouble with the formula.  Any help would be much appreciaed.
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Question by:Bob Schneider
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Rgonzo1971 earned 2000 total points
ID: 40001282
Hi,

you could use

=IF(COUNTIFS(A:A,A1,B:B,B1,C:C,C1,D:D,D1)>1,"X","")

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Regards
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by:Bob Schneider
ID: 40001287
Thank you
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