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mgao6767/add a flag variable if an observation is in another dataset.sas

Last active February 20, 2018 08:40
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add a flag variable if an observation is in another dataset.sas
data tmp;
merge anncomp(in=ina) some_ceo_year_events(in=inb);
by gvkey year execid;
flag = inb;
if ina;
run;
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