Google-sheets – Google sheets create a list of unique values that don’t exist in another column

google sheets

I want to check create a list in C of all the unique values in A that don't exist in B.

I'm using unique to get the unique values in A, but can't work out how to remove the values that exist in B. I'm sure this is easy but just don't know the right terminology to search for.

Does anyone know the answer?

https://i.stack.imgur.com/bDWko.jpg

Best Answer

you can try this:

=UNIQUE(FILTER(A2:A;ISNA(MATCH(A2:A;B2:B2;0))))

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