Looking for duplicates in 2 different columns

jayjay226

New Member
Joined
Aug 13, 2015
Messages
14
Hi there

I'm trying to come up with a formula that looks for duplicates in Column B and return a value of 1 (or True) if their corresponding values in Column A does not match (as per example below, data is not be sorted in any particular order). I can find the duplicates, but struggling with the second part, so hoping someone can help......

ABC
93179923440
93179923440
901751101011
931799101011
931799101020
901751102340

<tbody>
</tbody>


Thanks in advance
Jay
 

Excel Facts

Whats the difference between CONCAT and CONCATENATE?
The newer CONCAT function can reference a range of cells. =CONCATENATE(A1,A2,A3,A4,A5) becomes =CONCAT(A1:A5)

Marcelo Branco

MrExcel MVP
Joined
Aug 23, 2010
Messages
17,017
Office Version
  1. 2019
  2. 2010
Platform
  1. Windows
Maybe...

C1 copied down
=IF(AND(COUNTIF(B:B,B1)>1,COUNTIFS(A:A,A1,B:B,B1)=1),1,0)

Hope this helps

M.
 
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