SAS® Certification Prep Guide: Advanced Programming for SAS®9 Second Edition

Chapter 9. Introducing Macro Variables

• Overview 288

  • Introduction 288

  • Objectives 289

• Basic Concepts 289

  • Macro Variables 290

  • Referencing Macro Variables 290

  • Example: Referencing a Macro Variable 291

  • Example: Referencing a Macro Variable in a Title 291

• Using Automatic Macro Variables 292

  • Example 293

• Using User-Defined Macro Variables 293

  • The %LET Statement 293

  • Example 294

  • %LET Statement Examples 294

• Processing Macro Variables 295

  • SAS Processing 295

  • Tokenization 296

  • Examples 298

  • Macro Triggers 298

• Displaying Macro Variable Values in the SAS Log 298

  • The SYMBOLGEN Option 298

  • Example 299

  • The %PUT Statement 299

  • Example 300

• Using Macro Functions to Mask Special Characters 301

  • Macro Quoting Functions 301

  • Example 302

  • The %STR Function 302

  • Example 303

  • The %NRSTR Function 304

  • Example