No, let's say we have a country code JPN which is having rows of year 2011 and 2012 in one file, and in another file it doesn't have rows of 2011 and 2012 instead the file contains rows of year 2014 and 2014. Should we retain all that rows with year ...

ANONYMOUS wrote Also - is the provided output in LMS is what we need to get ? Or it's just a sample output ? And Also, if there are rows with cells not matched with header column count, do we need to just report it or supposed to exit the program ?

Hi professor, I see there is a country which is not present in one of the file(year is different) and should we suppose to retain that row as well or only take the rows which are in common(same country and year) in 3 files? For data cleaning process

I'm still unclear about on to retain only rows which have country code And year same in all three tsv files ? Or to combine every row from three files