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 make, vector, or code statement.