The simplest approach would be to convert the character date to a SAS (numeric) date before loading it into SAS VA. That way it will properly identified in your VA data source as a date.
Can use the TreatAs function to convert date to numeric value( which will be stored as the number of days between January 1 1960 and the date).
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See how to use one filter for multiple data sources by mapping your data from SAS’ Alexandria McCall.
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