Hi,
I have a dataset that I want to generate individual level dataset. I could do this by proc sort, data (retain, first.id) but I think proc sql would be more efficient in coding (some may not agree with this). Thanks
Currently I have
ID flag1 flag2 flag3
1 1 0 1
1 0 1 0
2 1 1 0
2 0 1 0
I would want the output to look like
ID flag1 flag2 flag3
1 1 1 1
2 1 1 0
Hi @avepo In my humble opinion, i would think you are better off using proc means/summary as you can take advantage of using variable lists and not bother typing max(var) one by one forever if you happen to have numerous flag vars.
Also it helps lazy people like me at best
data have;
input ID flag1 flag2 flag3;
cards;
1 1 0 1
1 0 1 0
2 1 1 0
2 0 1 0
;
proc means data=have nway noprint;
class id;
var flag:;
output out=want(drop=_:) max=;
run;
something like
proc sql;
select ID , max(flag1) as flag1, max( flag2 ) as flag2, max(flag3) as flag3
from have
group by id;
Hi @avepo In my humble opinion, i would think you are better off using proc means/summary as you can take advantage of using variable lists and not bother typing max(var) one by one forever if you happen to have numerous flag vars.
Also it helps lazy people like me at best
data have;
input ID flag1 flag2 flag3;
cards;
1 1 0 1
1 0 1 0
2 1 1 0
2 0 1 0
;
proc means data=have nway noprint;
class id;
var flag:;
output out=want(drop=_:) max=;
run;
Thank you both!
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