Hi,
i have two variables in a data set and i want to see if the first variable has values which also exists in the other variable. For example:
Varone Vartwo Flag
1 4 0
2 7 0
7 5 1
4 8 1
So, i want to check every single one of the values in Varone; if the value in Varone exists anywhere in variable Vartwo, then i want a flag value that says 1 and zero otherwise.
thanks
proc sql;
create table want as
select
*,
varone in (select vartwo from have) as flag
from have;
quit;
One method (there are many):
proc sql;
create table combvars as
select have.var1, have2.var2
from have, have as have2
where have.var1 = have2.var2;
quit;
proc sql;
create table want as
select
*,
varone in (select vartwo from have) as flag
from have;
quit;
this should work
data abc;
input varone vartwo;
datalines;
1 4
2 7
7 5
4 8
;
run;
proc sql;
select varone, vartwo, case when varone=var1 then 1 else 0 end as flag
from
(select varone, vartwo from abc)a
full join
(select varone as var1
from abc
where varone in (select vartwo from abc))x
on a.varone =x.var1;
Thank you all for your replies, i really appreciate it. It worked
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