I work at an Investment Bank, and am currently conducting a churn analysis. Essentially, this requires us to track which customers cancelled their contracts with our client. The issue is that the data is listed by account in one column, but that there are multiple accounts for a given customer. For example, if Walmart were a client, there might be 50 accounts for Walmart, each in a different city. How might we be able to combine all these entities, without running a manual process, as the file contains well over 60,000 accounts?
Solved by T. L. in 16 mins