How to fix the Oracle error QSM-02185: no partition key or PMARKER in select list?

In this post, you’ll learn more about the Oracle ErrorQSM-02185: no partition key or PMARKER in select list with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-02185: no partition key or PMARKER in select list

Reason for the Error QSM-02185: no partition key or PMARKER in select list

The capability in question is not supported when the materialized view unless the select list (and group by list if a GROUP BY clause is present) includes either the partition key of or a PMARKER function reference to the table in question.

How to fix the Error QSM-02185: no partition key or PMARKER in select list ?

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

Add the partition key or a PMARKER function reference to the select list (and the GROUP BY clause, if present).