The Little SAS® Book: A Primer, Third Edition

Chapter 3. Working with Your Data

	“Contrariwise,” continued Tweedledee,” if it was so, it might be; and if it were so, it would be; but as it isn’t, it ain’t. That’s logic.”
	--LEWIS CARROLL

From Alice Through the Looking Glass by Lewis Carroll. Public domain.

3.1	Creating and Redefining Variables	76
3.2	Using SAS Functions	78
3.3	Selected SAS Functions	80
3.4	Using IF-THEN Statements	82
3.5	Grouping Observations with IF-THEN/ELSE Statements	84
3.6	Subsetting Your Data	86
3.7	Working with SAS Dates	88
3.8	Selected Date Informats, Functions, and Formats	90
3.9	Using the RETAIN and Sum Statements	92
3.10	Simplifying Programs with Arrays	94
3.11	Using Shortcuts for Lists of Variable Names	96

Creating and Redefining Variables

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