11. Report-Writer Expressions and Formats : Operations : Logical Operators
 
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Logical Operators
Report-Writer recognizes the following Boolean logical operators:
Operator
Description
not
logical not - negation
and
logical and - conjunction
or
logical or - disjunction
is null
test to see if value is null
is not null
test to see if value is null
These operators take Boolean expressions as operands and evaluate to true or false. The not operator has the highest precedence of the operators; and/or have equal precedence. You can use parentheses for arbitrary grouping. Logical operators group from left to right.