SAS Certification Prep Guide: Base Programming for SAS 9, Third Edition

Assigning Values Conditionally Using SELECT Groups

Overview

Earlier in this chapter, you learned to assign values conditionally using IF-THEN/ELSE statements. You can also use SELECT groups in DATA steps to perform conditional processing. A SELECT group contains these statements:

This statement...	Performs this action...
SELECT	begins a SELECT group.
WHEN	identifies SAS statements that are executed when a particular condition is true.
OTHERWISE (optional)	specifies a statement to be executed if no WHEN condition is met.
END	ends a SELECT group.

You can decide whether to use IF-THEN/ELSE statements or SELECT groups based on personal preference.

General form, SELECT group: SELECT <(select-expression) ...