I often merge data and use the in= processing to create new variables (example below). It looks like this could be done with the case statement in SQL, but I can't get it to work.
data test;
merge one (in=inone)
two (in=intwo);
by ID;
if inone and not intwo then Notfound=1;
else Notfound=0;
run;
You can check on b.id.
proc sql;
create table want as
select a.*,
case
when b.id is missing
then 0
else 1
end as notfound
from one a left join two b
;
quit;
Hi,
proc sql;
create table TEST as
select COALESCE(A.ID,B.ID) as ID,
case when A.ID is null or B.ID is null then 1
else 0 end as NOTFOUND
from ONE A
full join TWO B
on A.ID=B.ID;
quit;
The full join will create a list of all rows from one or the other, with the first missing if not in second and viceversa. So when either is null will highlight where missing.
You can check on b.id.
proc sql;
create table want as
select a.*,
case
when b.id is missing
then 0
else 1
end as notfound
from one a left join two b
;
quit;
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