SAS® Certification Prep Guide: Base Programming for SAS®9

Chapter 15. Generating Data with DO Loops

Overview	452
Introduction	452
Objectives	452
Constructing DO Loops	452
Introduction	452
General Form of DO Loops	453
DO Loop Execution	454
Counting Iterations of DO Loops	455
Decrementing DO Loops	456
Nesting DO Loops	457
Iteratively Processing Data That Is Read from a Data Set	459
Conditionally Executing DO Loops	460
Using the DO UNTIL Statement	460
Using the DO WHILE Statement	461
Using Conditional Clauses with the Iterative DO Statement	462
Creating Samples	463
Summary	464
Text Summary	464
Points to Remember	465
Practice	465
Quiz	466

Overview

Introduction

You can execute SAS statements repeatedly by placing them in a DO loop. DO loops can execute any number of times in a single iteration of the DATA step. Using DO loops enables you to write concise ...