The result type returned by the external function that is to be converted to the type specified by the RETURNS clause.
...RETURNS DECIMAL(9,5) CAST FROM FLOAT...
- data type
- Whenever a LOB that requires data type conversion is passed to a method, the LOB must first be materialized for the conversion to take place.
- Name of the UDT.
- Optional containing database name, which is always SYSUDTLIB.