By Paul A. Herzberg
How SAS Works is a textbook designed to span the space among the SAS Institute's "Introductory Guide", that's a truly easy creation to the SAS process, and the "User's Guide", that's a reference instrument for these already good versed in SAS. How SAS Works is predicated on lectures and contains an introductory bankruptcy which fills in lots of of the generalities approximately SAS. It presents the data a newbie must use the SAS approach for small-to-medium sized jobs and is helping advance a version of the SAS procedure in a step by step demeanour. The booklet is pleasant and well-written, utilizing a superb movement of arguments and addressing questions an end-user could ask. It is going past the fundamental creation, aiding readers to get effects from the SAS method and to utilize different SAS Institute reference tools.
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Extra info for How SAS Works: A Comprehensive Introduction to the SAS System
Then only one statement would be needed and the fileref would not be required. However, there are good reasons for having a separate operating system statement. Consider what happens if you want to run the job on another computer system. The SAS statements (in the DATA step) would not have to be changed; the only change would be in the operating system statement. Many SAS programs are hundreds or thousands of statements long. The INFILE statement allows for a clear separation of operating system details from the SAS program itself.
EXERCISES 1. Describe all the characteristics of the family in the Statlab data with identification code "44-51 ". 2. For the operating system of your computer determine: a. How to define theft/ereffor a file; b. How to process a SAS program by the SAS System. 3 This SAS job, as all others in this book, was run in the eMS operating system. In that system, as in others, the statement needed to define the Ii/ere! can be included in the SAS program. Note that in other operating systems, this statement would be different.
TYPES OF DATA FILES The procedures specified in PROC steps can process only data stored in a SAS data set. Hence it is necessary to convert data, existing in a non-SAS file, into a special SAS file, called a SAS data set. Simple DATA steps, such as described in this chapter, do just this. The following diagram summarizes the types of data files discussed in this chapter: Data Files I I Non-SAS Files SAS Files 1 I External Files In-Stream Data SAS Data Sets 1 Temporary SAS Data Sets 1 Permanent SAS Data Sets Data files are of two types: non-SAS files and SAS files.
How SAS Works: A Comprehensive Introduction to the SAS System by Paul A. Herzberg