jeudi 23 novembre 2017

Check if a unique column name( account numbr) is 'NA' in all the different data frames having it as observation. look below for example

So for example, I have an account number in data frame 1, which is "NA" in df1, but the same account number in df2 might have a value(balance) against it. I want to find all account numbers which are giving "NA" in all the 5 different dataframes, it must be NA across all the files.

Thanks in advance

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