How to fix the Oracle error QSM-02002: DISTINCT aggregate measure in SELECT list?

In this post, you’ll learn more about the Oracle ErrorQSM-02002: DISTINCT aggregate measure in SELECT list with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-02002: DISTINCT aggregate measure in SELECT list

Reason for the Error QSM-02002: DISTINCT aggregate measure in SELECT list

The capability in question is not supported when the materialized view uses the DISTINCT qualifier on an aggregate function.

How to fix the Error QSM-02002: DISTINCT aggregate measure in SELECT list ?

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

Remove the DISTINCT qualifier.