IsUnknown

The IsUnknown() function checks whether the input parameter is unknown and not recognizable as a value or element.

It is only slightly different from IsEmpty() in the way that an empty text-value is a known element (it is a text and not unknown), but it does not have a value.

This function is SQL compatible. For more information about SQL compatibility, see our documentation.

Syntax

IsUnknown(parameter)

IsUnknown( "1" ) => False

IsUnknown(unknownnumber) => True

IsUnknown( "" ) => False >> This is different from IsEmpty( "" ) : "" is a known element (an empty string) but it does not have a value according to the IsEmpty implementation.

IsUnknown( " " ) => False

IsUnknown( '' ) => False

IsUnknown( {} ) => True

IsUnknown( [List WithRows] ) => False

IsUnknown( [List WithNoRows] ) => True

IsUnknown(ToString(unknownstring)) => FALSE > the ToString on UnknownString makes the element Known as a String Type but with an Empty Value >> better use the HasValue or IsEmpty functions for more practical and logical use

Parameters

Name
Type
Required
Description

parameter

any

☑️

Field that is checked for a value

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