How to change order of observations in dataset without using proc procedures like proc sort, proc sql etc.
What I want to ask ... is there any way to shuffle the dataset. As this is question I faced by interview.
For example :
In one dataset :
Subid Invid Sex Age
0001 101 Male 30
0002 202 Male 40
0003 303 Male 50
0004 404 Female 60
The output dataset should be like.
Subjid Invid Sex Age
0004 404 Female 60
0001 101 Male 30
0003 303 Male 50
0002 202 Male 40
Stupid question.
To get that exact result you could use WHERE clauses on SET statements.
data want ;
set have (where=(sex='Female'))
have (where=(sex='Male'))
;
run;
If they wanted to know if you knew how to use dataset options they should have just asked a question about that.
Agreed, but you get order subid=4,1,2,3 and 4,1,3,2 was requested. Maybe they wanted
data want;
do i = 1 to ceil(last/2);
p = last - i + 1;
set have point=p nobs=last;
output;
if i < p then do;
set have point=i;
output;
end;
end;
stop;
drop i;
run;
PG
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