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IF THEN ELSE WHERE statement SELECT WHEN DO loop DO WHILE DO UNTIL RETAIN statement SUM statement FIRST. and LAST. variables Automatic _N_ variable
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%LET Macro variable reference %MACRO and %MEND Macro parameters %IF %THEN %DO loop CALL SYMPUTX SYMGET %SYSFUNC Macro quoting %SUPERQ
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SAS Complete Course / Row Processing

SELECT WHEN

Learn SELECT WHEN in SAS through the exact construct, a dedicated example, a boundary case, and a mastery check.

10 min read • Beginner

SELECT WHEN is an atomic SAS lesson inside Row Processing. The example uses the specific syntax, command, API, instruction, or language rule named by this lesson.

Study the construct itself, then change one relevant input and predict the result before running it. That keeps this lesson focused on SELECT WHEN rather than on generic SAS syntax.

Topic-specific example

sas-02-03.sas
sas Try It Live 
data work.labels; set work.orders; select(status); when("P") label="Paid"; when("N") label="New"; otherwise label="Other"; end; run;
Edge case / engineering note

For SELECT WHEN, inspect the SAS log as well as the output data set; type conversion, missing values, and BY-group ordering can change results without stopping execution.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

SELECT WHEN Mastery Check →
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