Dear all, I'm quite new to macro, and my question is: I'm trying to merge 12 datasets together, named data_1 to data_12 with id and already sorted, and my code is %macro mergedata; %do i=1 %to 12; data merged_data; merge data_&i; by id; %end; run; %mend; and it resulted in only the data from data_12. it seems that data_1 to data_11 were replaced and disappeared. How should I rewrite that? Thank you very much!
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