How to fix the Oracle error QSM-01296: query rewrite not possible because materialized view contains duplicate grouping sets?

In this post, you’ll learn more about the Oracle ErrorQSM-01296: query rewrite not possible because materialized view contains duplicate grouping sets with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-01296: query rewrite not possible because materialized view contains duplicate grouping sets

Reason for the Error QSM-01296: query rewrite not possible because materialized view contains duplicate grouping sets

Materialized view with grouping sets contains duplicates and no rewrite is supported for it. For example, GROUP BY GROUPING SET ((a), (a)) is not supported for rewrite.

How to fix the Error QSM-01296: query rewrite not possible because materialized view contains duplicate grouping sets ?

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

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