Hello!
I have two sas tables and am trying figure out which observations between the two tables are different.
I don't know if table a has observations table b doesn't have and vice versa.
How would I do that? They differ by the identifying variable schcode
proc sql;
create table differing as
select a.*
from a
left join b on a.schcode=b.schcode;
quit;
Thanks!
Are you simply trying to see which observations are in one and and not in the other? If so, then this would work:
proc sql;
create table differing as
select *, 'In A, not in B' as Note
from a
where schcode not in (select schcode from b)
union
select *, 'In B, not in A' as Note
from b
where schcode not in (select schcode from a);
quit;
If you're trying to column compare values as well, then proc compare is the way to go.
Take a look at PROC COMPARE. It's an excellent option for comparing observations between two SAS data sets.
Are you simply trying to see which observations are in one and and not in the other? If so, then this would work:
proc sql;
create table differing as
select *, 'In A, not in B' as Note
from a
where schcode not in (select schcode from b)
union
select *, 'In B, not in A' as Note
from b
where schcode not in (select schcode from a);
quit;
If you're trying to column compare values as well, then proc compare is the way to go.
Thank you everyone :)!
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