How r relational operator and logical operators related to one another
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Only one logical operator can be used to combine two relations. However, multiple relations can be combined into a complex logical expression.
Regardless of the number of relations and logical operators used to build a logical expression, the result is either true, false, or indeterminate because of missing values.
Operators or expressions cannot be implied. For example, X EQ 1 OR 2 is illegal; you must specify X EQ 1 OR X EQ 2.
The ANY and RANGE functions can be used to simplify complex expressions.
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