Hi all! I have a question about how to assign a sequential number by one variable.
Below is the dataset I'm starting with:
id
213
213
413
413
535
535
617
617
This is what I would like
id seq
213 1
213 1
413 2
413 2
535 3
535 3
617 4
617 4
Any advice?
data want;
set have;
by id;
if first.id then seq+1;
run;
Thank you!
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