Variables are introduced using the example of a squirrel who wants to know where his nuts are buried, and how many he has. A variable is described as a special box where computers keep useful ...

The MDY function converts MONTH, DAY, and YEAR values to a SAS date value. For example, MDY(10,17,91) returns the SAS date value '17OCT91'D. The YYQ function computes the SAS date for the first day of ...