not

The not function reverses the value of its boolean argument.

Syntax

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not( Expression )

Arguments

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• Expression: A boolean expression to be reversed.

Results

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Returns the reversed logical value of its boolean argument.

If the argument is null, or cannot be converted to bool (using the tobool function), returns null.

Examples

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These examples return false:

• not(true)
• not("true")
• not(1)
• not(100)

These examples return true:

• not(false)
• not("false")
• not(0)

These examples return null:

• not("abc")
• not(null)