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Boolean Operators

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The standard Boolean operators, AND, OR, and NOT, can be used in both content and property-value queries. The NOT operator is supported in an AND NOT operation as the full form of the NOT operator. Unary NOT is supported as an operator for value-type property queries (for example, ! @size > 100). In addition, the Boolean operators can be replaced by symbols. The Boolean operators and their associated full forms and symbols are the following.

Operator Full form Symbol Notes
AND
AND
&
Only the English spelling of the long form is available in Dialect 2.
OR
OR
|
Only the English spelling of the long form is available in Dialect 2.
NOT
(binary)
AND NOT
&!
Only the English spelling of the long form is available in Dialect 2.
NOT
(unary)
NOT
!
Unary NOTfor value-type property queries. Only the English spelling of the long form is available in Dialect 2.

 

In Dialect 1, the Boolean operators are localized for several non-English languages. See Incompatibilities of Dialect 2 with Dialect 1 for complete details.