Overview
Introduction
Creating SAS Data Sets from External Files
explained how to read data, perform basic modifications, and create
a new SAS data set.
This chapter teaches you what
happens behind the scenes
when the DATA step reads raw data. You'll examine the program data
vector, which is a logical framework that SAS uses when creating
SAS data sets.
Understanding how the program
operates can help you to anticipate how variables will be created
and processed, to plan your modifications, and to interpret and
debug program errors. It also gives you useful strategies for
preventing and correcting common DATA step errors.
Objectives ...
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