%LET PERFDATE=&G_JOB_DATE sampdate=intnx('month',"&PERFDATE."d,-12,'end');
if I have a series of 10 programs P1.sas to P10.sas if I let the above in P3.sas, does that mean PERFDATE stays as G_JOB_DATE till the end of P10.sas program unless I reassign it to something else in any programs after P3.sas?
A macro variable persists throughout a SAS session. As long as the programs are run in a single session, the macro variable will be there.
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