Hello Monks, I have 2 csv files, each with 10 columns,(test1.csv and test2.csv) they both have the same headers and the first 3 columns are the key for each file. What is the quickest way to take column 4,5 and 6 from from test1.csv and replace these columns in test2.csv. It needs to be done by each row because you need to match each row by key because number of rows are different in each file. Thanks

In reply to replace columns in csv by healingtao

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