select (dataloop)#

Purpose#

Selects specific rows (observations) in a data loop based on a logical expression.

Format#

select logical_expression;

Examples#

select age > 40 AND sex $== 'MALE';

Remarks#

Selects only those rows for which logical_expression is TRUE. Any variables referenced must already exist, either as elements of the source dataset, as extern’s, or as the result of a previous Format, vector, or code statement.