Page 61 - SAS_manual

6.4 Some other statement

6.4.1 Retain statement:

Retain statement is used to retain previous value of given variable.

6.4.2 Sum Statement:

Syntax::Newvar+increment;

 Is used to create new variable & initialize with zero.
 It is also used to retain previous value of variables.

Program 6.10: Output:

If we don’t use retain statement then SAS is not remembering the last t_age. Here sum of age can be
calculated row wise.

6.4.3 Delete statement:

It is used to delete an observation.
6.4.4 Missing function:

It is used to return value 1 if given variable has missing value otherwise zero.

Program 6.11: Output:

SAS HANDBOOK | VISIT:: http://nikhilanalytics.com 61