Check for duplicates and exclude blank cells

Christopher Pretty

Hi. I am trying to write a formula that will check for duplicates in a column but skip the blanks. The normal formula I use is Countif([Column Name]:[Column Name], [Column Name]@row) this counts blanks. I have tried =IF(ISBLANK([Column Name]@row), 0, IF(COUNTIF([Column Name]:[Column Name], [AColumn Name]@row) > 1, 1)) I get an incorrect argument error. I have also tried =IF([Column Name]@row ISBLANK(), "0", COUNTIF([Column Name]:[Column Name], [Column Name]@row)) but I get an unparsable error.

Christina09

Hi @Christopher Pretty

You can try to use "" instead of ISBLANK. It pretty much means the same thing.

=IF([Column Name]@row = "", 0, IF(COUNTIFS([Column Name]:[Column Name], [Column Name]@row) = 1, 0, 1))

Hope this works for you.

Christina09

Hi @Christopher Pretty

You can try to use "" instead of ISBLANK. It pretty much means the same thing.

=IF([Column Name]@row = "", 0, IF(COUNTIFS([Column Name]:[Column Name], [Column Name]@row) = 1, 0, 1))

Hope this works for you.

Christopher Pretty

Thank you. That worked!