Oracle Error Message
QSM-02039: top level mv query uses grouping sets
Reason for the Error
The capability in question is not supported when the materialized view use grouping sets.
Solution
Re-phrase the query to avoid use of grouping sets.
QSM-02039: top level mv query uses grouping sets
The capability in question is not supported when the materialized view use grouping sets.
Re-phrase the query to avoid use of grouping sets.