It'll depend on what he's looking for. If he needs the start month, it needs a -1 on the row_number function, so that it starts with 0 instead of 1. If he needs the names of the months, that'll need to be added to the final select. If he needs it to give the first day of each month, that'll require a slight modification to the final select. And so on. Since I don't have those details, I set up a skeleton, and the OP can either flesh it out, or ask questions about the details, or (all to common) never speak up again and we won't know what was actually needed.