I have data for multiple account numbers (for work) and dates, and I need to identify when there is a change in account number in order to add a new field with a count - which counts sequentially starting with 1 and then starts over at 1 when the account number changes.
Please help! Thank you!
Ex. The red column is what I am trying to create
Account Date_To Counter
12345 06/30/2015 1
12345 05/31/2015 2
12345 04/30/2015 3
19999 06/30/2015 1