SAS Hash Object Programming Made Easy
Hash objects, an efficient look-up tool in the SAS DATA step, are object-oriented programming structures that function differently from traditional SAS language statements. Michele Burlew's SAS Hash Object Programming Made Easy shows readers how to use these powerful features, which they can program to quickly look up and manage data and to conserve computing resources. SAS provides various look-up techniques, and hash objects are among the newest, so therefore many users may not have yet used them. Because the examples presented vary in complexity, SAS Hash Object Programming Made Easy is useful to SAS users of all experience levels, from novice programmer to advanced programmer. Novice programmers can adapt some of the simpler hash programming techniques as they develop their SAS programming skills. This book helps more experienced programmers learn how to take advantage of hash object programming by comparing traditional processing techniques to those that use hash objects. Additionally, users from diverse fields with different requirements can adapt the examples in SAS Hash Object Programming Made Easy to fit their unique situations. This book is part of the SAS Press program.
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An Overview of Hash Objects
Hash Object Terminology and Concepts
Basic Has Object Applications
Creating Data Sets from Hash Objects and Updating Contents of Hash Objects
Hash Objects with Multiple Sets of Data Items per Key Value
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ADHW3A allow multiple sets Application Example appttype argument tag Baseline BOOKID BOOKLIST BPDATE BPMEASURES Burlew Cary CHECK method CLINIC codedate codedesc CONFROOMS Copyright Creating a Data data _null_ data items DATA step variable declare hash DECLARE statement DEFINEDATA method diast Dietary empfn empln employees empmi entries FIND method goal of Example hash iterator object Hash Object data Hash Object Programming Health Data Sets HHID household Immunization items per key key items key value length=8 format=mmddyy10 lists the observations loads data set lookup loop Medical Writing method call Michele MULTIDATA North Carolina objects that allow Obs ptid October 22 OCTOBEREVENT OPSURGERY OUTPUT method Patterson PM Cholesterol PM Counseling PROC PRINT processing Programming Made Easy provider_id retrieves data return code ROOMID ROOMSCHEDULE SAS Institute Inc SAS language SAS loads SAS log SAS retrieves SET statement sets of data specify Stephanie STUDYAPPTS studyid systol value of EMPID