How to fix the Oracle error QSM-02054: DISTINCT clause in select list in mv?

In this post, you’ll learn more about the Oracle ErrorQSM-02054: DISTINCT clause in select list in mv with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-02054: DISTINCT clause in select list in mv

Reason for the Error QSM-02054: DISTINCT clause in select list in mv

The capability in question is not supported when the materialized view uses the DISTINCT clause in the select list.

How to fix the Error QSM-02054: DISTINCT clause in select list in mv ?

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

Re-phrase the query to avoid the use of the DISTINCT clause.