Result = NOT Expression

Computes the logical not of an expression.

The logical NOT operator takes one boolean expression and returns its contrary. The result returned by this operation is shown in the following table:

The numerical NOT operator takes one integer value and returns an integer value. The operator actually inverts each bit of the expression, as shown in the following table:

If Expression is a string or an object, it returns TRUE if Expression is null, and FALSE if it is not null.

Voorbeeld