The following is the ORA-22901 error message, you can learn the cause and solution of the Oracle database error.


ORA-22901 cannot compare nested table or VARRAY or LOB attributes of an object type

Cause: Comparison of nested table or VARRAY or LOB attributes of an object type was attempted in the absence of a MAP or ORDER method.

Solution: Define a MAP or ORDER method for the object type.

Case:

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