How to fix the Oracle error QSM-02112: top level query has LEFT OUTER, RIGHT OUTER or FULL OUTER join?

In this post, you’ll learn more about the Oracle ErrorQSM-02112: top level query has LEFT OUTER, RIGHT OUTER or FULL OUTER join with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-02112: top level query has LEFT OUTER, RIGHT OUTER or FULL OUTER join

Reason for the Error QSM-02112: top level query has LEFT OUTER, RIGHT OUTER or FULL OUTER join

The capability in question is not supported when the materialized view uses these types of joins.

How to fix the Error QSM-02112: top level query has LEFT OUTER, RIGHT OUTER or FULL OUTER join ?

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

Re-phrase the query to avoid the use of these types of joins.