ORDINALNAME returns a nonvarying character string that is the member
of the set associated with the ordinal x.
>>-ORDINALNAME(x)----------------------------------------------><
- x
- Reference. It must have ordinal type.
ORDINALs cannot be used in computational expressions and cannot be converted to character, but ORDINALNAME provides a way to obtain a displayable value for an ORDINAL and can be very useful in debugging.