OK....here is a display of a data table that has 200 rows, with 118 different IDs and contains a date and an Expense column.
What I want is a data table with just one entry per ID and for the date to be the last date the person had a transaction, and I want to know the sum of the expenses. So I go to
Tables=>Summary
and it brings up the following Dialog window which I fill in the information to group by IDs, return the Maximum Date value and the Sum of the Expenses
I then click on the OK button and it creates a data table with the summary statistics
I could have also gotten the same results by using the Tabulate Platform
Analyze=>Tabulate
It is a drag and drop report writer, that once you have the report the way you want, you can go to the red triangle and request that a data table be made from the report
Jim