I'm Trying to create a "Windowing Function" In Cache similar to SQL Server. I'm trying to create a Row Number for every account number (Example Below). I know I can use the %Vid function to create the Row Number but I need the row number to reset with every new account number. In SQL Server it would be Row_Number over (Partition by account number order by account number). and Example of what I am trying to create is below.

Row Number Account Number

1 1

2 1