I have an Excel file that has columns A and B, both have data that may or may not exist in other column, I’m only interested in the data of column A that do not exist in B. These Columns have same Header names. What formula can I use to show which items in column A aren’t in B?
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Put this in C2 and copy down
Then if the value in A isn’t in B the cell in column C will say “not in B”.