Using Parentheses to Control Order of Evaluation Even though SAS evaluates logical operators in a specific order, you can control the order of evaluation by nesting expressions in parentheses. That is ...

Boolean operators, which Excel calls logical functions, include AND, OR, NOT, and a new function called XOR. These operators are used between search terms to narrow, expand, or exclude your ...

A prefix operator is an operator that is applied to the variable, constant, function, or parenthetic expression that immediately follows it. The plus sign (+) and minus sign (-) can be used as prefix ...