SAS® Certification Prep Guide: Advanced Programming for SAS®9, Third Edition

Chapter 22Using Best Practices

Overview

Introduction

Objectives

Prerequisites

Executing Only Necessary Statements

Overview

Positioning of the Subsetting IF Statement

Comparative Example: Creating a Subset of Data

Using Conditional Logic Efficiently

Comparative Example: Creating Variables Conditionally Using DO Groups

Comparative Example: Creating Variables Conditionally When Calling Functions

Using DO Groups Efficiently

Comparative Example: Creating Data in DO Groups

Eliminating Unnecessary Passes through the Data

Using a Single DATA or PROC Step to Enhance Efficiency

Using a Single DATA Step to Create Multiple Output Data Sets

Comparative Example: Creating Multiple Subsets of a SAS Data Set

Using the SORT Procedure with a WHERE Statement to ...