Why zero observation ?

[Attyslogin]

why output of this program contains no observation ? can anyone explain it to me...thanks 

Given data : 

money dataset has 5 observations.

people dataset has observations

My program is : 

data empsal;

     set money (in=money) people(in=people);

     if money and people;

run;

empsal contains 0 observations...why so ? 😞

[RW9 · Accepted solution]

You are "setting" the second dataset After the first, there is no merge, hence:

     if money and people;

Is never true, the records all come from money in the first instance, and then from people in the second, never both.  Perhaps you mean to merge the data?

[Attyslogin]

no with respect to merge i know how this program gonna behave....thanks for your valuable response.

Understood the concept !