Hello!
Can someone guide me how to count unique values across rows by a certain variable? Below is my dataset:
id med class
1 A 1
1 B 1
1 C 2
1 D 4
2 S 3
2 A 1
3 A 1
This is what I would like
id count_med count_class
1 4 3
2 2 2
3 1 1
Thank you!
data have;
input ID med $ class;
cards;
1 A 1
1 B 1
1 C 2
1 D 4
2 S 3
2 A 1
3 A 1
;
run;
proc sql;
create table want as
select id,count(distinct med) AS count_med,
count(distinct class) as count_class
from have
group by id;
quit;
data have;
input ID med $ class;
cards;
1 A 1
1 B 1
1 C 2
1 D 4
2 S 3
2 A 1
3 A 1
;
run;
proc sql;
create table want as
select id,count(distinct med) AS count_med,
count(distinct class) as count_class
from have
group by id;
quit;
Great, thank you!
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