Execution Phase

Initializing Variables

At the beginning of the execution phase, the value of _N_ is 1. Because there are no data errors, the value of _ERROR_ is 0. 
filename invent 'Z:\sasuser\invent.dat';
data work.update;
	infile invent;
	input Item $1-13 IDnum $15-19
	InStock 21-22 BackOrd 24-25;
	Total=instock+backord;
run;
Program Data Vector
The remaining variables are initialized to missing. Missing numeric values are represented by periods, and missing character values are represented by blanks.

INFILE Statement

The INFILE statement identifies the location of the raw data.
filename invent 'Z:\sasuser\invent.dat';
data work.update;
	infile invent; input ...

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