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isNull

Returns whether a value is NULL.

The isNull function evaluates an empty string as FALSE.

util:isNull(value)

The following table describes the argument for this command:

Argument	Required/ Optional	Description
value	Required	Passes the rows that you want to evaluate. You can enter any valid transformation expression. You can pass a value of any data type except Binary.

TRUE (1) if the value is NULL.

FALSE (0) if the value is not NULL.

The following example checks for NULL values in the items table:

util:isNull( ITEM_NAME )

The following table lists some sample values and return values:

ITEM_NAME	RETURN VALUE
Flashlight	0 (FALSE)
NULL	1 (TRUE)
Regulator system	0 (FALSE)
''	0 (FALSE) Empty string is not NULL

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