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Breck Carter
Last modified: May 16, 1996
mail to: bcarter@bcarter.com
"I have a DataWindow that shows students and schools they previously attended so there is sometimes more than one school per student. I'm using Suppress Repeating Values to show each student's name only once. I want to number the students 1, 2, 3 but the DataWindow keeps showing 1, 2, 4. How can this be done?"
Figure 1 shows the desired effect where each new value of student name gets a new number. The DataWindow GetRow() function won't work because the second student uses up row numbers 2 and 3.
1 Fred Jones Central Tech 2 Mary Smith U of T Schools Spar Academy 3 Ralph Adams Eastern ConservatoryThe DataWindow CumulativeSum() function is very handy for solving various counting problems, much more so than the count() function. To solve this particular problem create a computed field based on the expression in Figure 2.
CumulativeSum ( 1 for all distinct student_name )Give this computed field a name like student_number. Display it on the the DataWindow and add it to the Suppress Repeating Values list to get the report shown in Figure 1.