SPSS® 12.0 Command Syntax Reference

SELECT IF
SELECT IF [(]logical expression[)]
The following relational operators can be used in logical expressions:
Symbol Definition Symbol Definition
EQ or = Equal to NE or * Not equal to
LT or < Less than LE or Greater than GE or >= Greater than or equal to *
* On ASCII systems (for example, UNIX, VAX, and all PC’s) you can also use ~=;
on IBM EBCDIC systems (for example, IBM 360 and IBM 370) you can also use ¬=.
The following logical operators can be used in logical expressions:
Example
Overview
Symbol Definition
AND or & Both relations must be true
OR or | Either relation can be true
Not* Reverses the outcome of an expression *
* On ASCII systems you can also use ~; on IBM EBCDIC systems
you can also use ¬ (or the symbol above number 6).
SELECT IF (SEX EQ ’MALE’).
SELECT IF permanently selects cases for analysis based upon logical conditions found in the
data. These conditions are specified in a logical expression. The logical expression can contain
relational operators, logical operators, arithmetic operations, and any functions allowed in
COMPUTE transformations (see COMPUTE and see “Transformation Expressions” on p. 37 in
Volume I). For temporary case selection, specify a TEMPORARY command before SELECT IF.
Basic Specification
The basic specification is simply a logical expression.
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