created two data sets in set statement

[Ronein]

Hello

May anyone explain the following code.

Why in data set One I get 8 observations?

Why in data set two I get 5 observations?

What is the name of subject in this example?(We created two data sets in set statement)

Data tbl1;
input Var1 $ Var2 $;
cards;
A one
A two
B three
C four
A five
;
run;

data ONE   TWO;
set tbl1;
if Var1='A' then output ONE;
output;
run;

[LinusH · Accepted solution]

Since there is no ELSE, you'll have dual OUTPUT statements for A.
5+3=8.