Save Disk Space in SAS

Save disk space and make your data sets easier to understand by inputting only the data you need. Drop variables you no longer need.

DATA mylib.yearly(DROP=Rain1-Rain12);
SET Old(DROP=Snow1-Snow12);
Total = SUM(of Rain1-Rain12);
programming statements
RUN;

Drop DO loop indexing variables.

data Mylib.NewCost (DROP=i);
set Mylib.Cost;
array Amt(100) Amt1-Amt100;
do i=1 TO 100;
Amt(i)=MAX(0,Amt(i));
end;
run;

Store numeric categorical data in character variables to save space.
length quest1-quest40 $ 1;