Difference between revisions of "Boolean"

Latest revision as of 00:43, 18 October 2011

Logical operators can be used to build more complex expressions.

The logical operators are:

AND

OR

Considerations

Two subexpressions joined by a logical operator form a logical expression.
Logical expressions resolve to a Boolean value: 1/0 or TRUE/FALSE.
Use parentheses--()--to group expressions logically and to join multiple expressions.
Parentheses are used in pairs; each open parenthesis "(" requires a closing parenthesis ")".
For example:

((<expression1> AND <expression2>) OR (<expression3> AND <expression_4>))

@@ Line 1: / Line 1: @@
-<tt>LOGICAL OPERATOR</tt>
+====LOGICAL_OPERATOR====
-:{|
+:Logical operators can be used to build more complex expressions.
-Logical operators provide the ability to include or exclude groups of records in [[Expressions]].
-The logical operators are:
+:The logical operators are:
-:<tt>&&</tt> Logical AND (and)
+:: <tt>AND</tt>
-:<tt>||</tt> Logical OR (or)
+:: <tt>OR</tt>
-;Considerations:
+:;Considerations:
-:* Logical expressions can be grouped using parentheses: <tt>()</tt>
+::* Two subexpressions joined by a logical operator form a ''logical expression''.
-:* Logical expressions resolve to a Boolean value: ''1/0'' or ''TRUE/FALSE''.
+::* Logical expressions resolve to a Boolean value: ''1/0'' or ''TRUE/FALSE''.
-|}
+::* Use parentheses--<tt>()</tt>--to group expressions logically and to join multiple expressions.
+::* Parentheses are used in pairs; each open parenthesis "(" requires a closing parenthesis ")".
+::* For example:
+:::  <tt>((<expression1> AND <expression2>) OR (<expression3> AND <expression_4>))</tt>
+<!--
+:::  <tt>((<expression1> && <expression2>) || (<expression3> && <expression_4>))</tt>  -->