The NOT expression is processed first. Then the expressions joined by AND are processed. Finally, the expressions joined by OR are processed. For a complete discussion of the rules for evaluating ...
operand something to be operated on. An operand can be a variable, a SAS function, or a constant. See Specifying an Operand. operator a symbol that requests a comparison, logical operation, or ...
Tests of characteristics associated with PUIDs are made in a form or mathematical logic known as a Boolean expression (after George Boole who invented it). A Boolean expression combines ...
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