How to fix the Oracle error QSM-02088: mv omits at least one grouping key from the select list?

In this post, you’ll learn more about the Oracle ErrorQSM-02088: mv omits at least one grouping key from the select list with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-02088: mv omits at least one grouping key from the select list

Reason for the Error QSM-02088: mv omits at least one grouping key from the select list

The capability in question is not supported when the materialized view omits any grouping expressions from the select list.

How to fix the Error QSM-02088: mv omits at least one grouping key from the select list ?

You can fix this error in Oracle by following the below steps

Include all GROUP BY expressions in the select list.