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Returns true if the argument evaluates to false, and vice-versa. Equivalent to the ! operator.

The argument can be a literal Boolean, a function returning a Boolean, or a reference to a column containing Boolean values.

Since the function returns a Boolean value, it can be used as a function or a conditional.

NOTE: Within an expression, you might choose to use the corresponding operator, instead of this function. For more information, see Logical Operators.

derive type:single value: NOT(customerHappiness > 70) as:'contactCustomer'

Output: If the value in the customerHappiness column is not greater than 70 then the value in the new contactCustomer column is true. Otherwise, the value is false.

derive type:single value:NOT(value1)

Argument	Required?	Data Type	Description
value1	Y	string	The value must be a Boolean literal, column reference, or expression that evaluates to `true` or `false`.

value1

Expression, column reference or literal that evaluates to a Boolean value.

Missing or mismatched values generate missing results.

Required?	Data Type	Example Value
Yes	Function or column reference returning a Boolean value or Boolean literal	`myHeight > 2.00`

value1

Example - Logical Functions