I am trying to rank my customer orders dbase - a field which shows each cutomer's 1rst order, their 2nd order, 3rd order and so on, based on the invoice dates (sorted asc). My table has 2 fields: Customer Number, Invoice Date.
Using an example shown here, http://support.microsoft.com/kb/208946
(example 1), I am able to rank ONE customer at a time (If I filter my source table to show only one specific Customer Number). However, my source table has 25000+ records with many Customer Numbers, each with between 1 and 100 Invoice Dates . . . when I try it unfiltered, it does not rank 1,2,3,4 . . . but rather something like 10, 47, 124 . . . .
Is it possible to rank all 25000+ records so that it will rank each Customer Number order 1,2,3,4 . . . and it will start over at 1 each time the Customer Number changes?