How to fix the Oracle error QSM-02084: DISTINCT clause on a duplicate sensitive aggregate function?

In this post, you’ll learn more about the Oracle ErrorQSM-02084: DISTINCT clause on a duplicate sensitive aggregate function with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-02084: DISTINCT clause on a duplicate sensitive aggregate function

Reason for the Error QSM-02084: DISTINCT clause on a duplicate sensitive aggregate function

The capability in question is not supported when the materialized view uses the DISTINCT clause in this context.

How to fix the Error QSM-02084: DISTINCT clause on a duplicate sensitive aggregate function ?

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

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