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Rick Aster: Professional SAS Programming Shortcuts: Contents

Chapter 51
Program
Merge after interleaving

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DATA AB / VIEW=AB;
   SET A B;
   BY X1 X2;
RUN;
DATA CD / VIEW=CD;
   MERGE C (IN=IN1) D (IN=IN2);
   BY X1;
   IF IN1 AND IN2;
RUN;
DATA E;
   MERGE AB CD;
   BY X1 X2;
RUN;