Output arguments
The output argument of a function indicates the type of object the function produces and the number of objects a function can produce. An output argument is specified as one of the following object types or values:
- A single data object of a type
- A series of data objects of the same type
- "True" or "False"
If the output of a function is a series, that function can be used only in a map rule in the map designer. It cannot be used in a component rule in the schema designer. For example, you cannot use the CLONE, EXTRACT, REJECT, SORTDOWN, SORTUP or UNIQUE functions in the schema designer.