07-05-2016 01:12 PM
07-05-2016 01:24 PM
How do you identify a "churner" or "non-churner"? What are the rules for the usage charge? Do you have dates? Are the Dates SAS date values or something else? Do you already have duration? "All the 6 months of 2011" is odd considering years usually have 12 months.
You need to describe the data that you have.