How to fix the Oracle error QSM-02208: subquery using the NOT IN clause in materialized view?

In this post, you’ll learn more about the Oracle ErrorQSM-02208: subquery using the NOT IN clause in materialized view with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-02208: subquery using the NOT IN clause in materialized view

Reason for the Error QSM-02208: subquery using the NOT IN clause in materialized view

The capability in question was not supported when the materialized view uses NOT IN with a subquery.

How to fix the Error QSM-02208: subquery using the NOT IN clause in materialized view ?

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

Rephrase the query to avoid the use of the NOT IN clause.