4.1 | Introduction 110 |
4.2 | Conditional Logic 110 |
4.3 | CASE Expressions 112 |
4.3.1 CASE Logic versus COALESCE Expression 114 | |
4.3.2 Assigning Labels and Grouping Data 116 | |
4.3.3 Logic and Nulls 118 | |
4.4 | Interfacing PROC SQL with the Macro Language 121 |
4.4.1 Exploring Macro Variables and Values 121 | |
4.4.2 Building Macro Tools and Applications 132 | |
4.5 | Summary 135 |