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Rick Aster: Professional SAS Programming Secrets: Contents

Chapter 10
Program 10i
Duplicate observations

Use this program with any SAS data set that may have duplicate observations.

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*
  Professional SAS Programming Secrets
  Program 10i
  Duplicate observations
*;
proc sort data=work.list out=work.list1 dupout=work.dups
    equals nodupkey;
   by reader;
run;