I WOULD LIKE TO REMOVE DUPLICATES FROM A VARIABLE KEY TO THE MAXIMUM DATE OF ANOTHER VARIABLE AND I DO NOT KNOW HOW, CAN YOU HELP ME?
Example:
COLUMN A(KEY) COLUMN B(DATE)
1 20170422
1 20170423
1 20170425
I NEED THE SAME KEY WITH MAXIMUM DATE, REMOVING THE DUPLICATED KEYS KEEPING THE KEYWORK WITHOUT DUPLICATION FOR THE LAST DATE AVAIABLE TO THIS KEY. CAN YOU UNDERSTAND ME? TKS
proc sql;
select *
from have
group by key
having date=max(date);
quit;/*date is column b*/
Sorry for my answer, thanks a lot for your help.
SAS contains tools to handle this:
proc sort data=have;
by key date;
run;
data want;
set have;
by key date;
if last.key;
run;
Nope, can't understand you, maybe your CapsLock is stuck? Maybe sort the data in order, then take last or first value?
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