IsEmpty()

Category: Logical

Syntax: IsEmpty ( expression )

Parameters:

expressionTypically a field name, but can be any valid FileMaker Pro calculation formula.

Data type returned: Number

Description:

Returns 1 (true) if the referenced field is empty or if the expression returns an empty string. Returns 0 (False) if the field or expression is not empty.

Remember that zero is a valid entry for a number field. If a number field contains a 0, it is not considered to be empty. If you need to test for zero or null, use GetAsBoolean().

Examples:

Function	Results
IsEmpty (myField)	Returns 1 if myField is empty.
IsEmpty (Name_First & Name_Last)	Returns 1 if the result of concatenating the two fields together is an empty string.