The Little SAS® Book: A Primer, Fourth Edition

Chapter 3. Working with Your Data

• 3.1 Creating and Redefining Variables 78

• 3.2 Using SAS Functions 80

• 3.3 Selected SAS Character Functions 82

• 3.4 Selected SAS Numeric Functions 84

• 3.5 Using IF-THEN Statements 86

• 3.6 Grouping Observations with IF-THEN/ELSE Statements 88

• 3.7 Subsetting Your Data 90

• 3.8 Working with SAS Dates 92

• 3.9 Selected Date Informats, Functions, and Formats 94

• 3.10 Using the RETAIN and Sum Statements 96

• 3.11 Simplifying Programs with Arrays 98

• 3.12 Using Shortcuts for Lists of Variable Names 100

Creating and Redefining Variables

If someone were to compile a list of the most popular things to do with SAS software, creating and redefining variables would surely be near the top. Fortunately, SAS is flexible and uses a common sense approach ...