How to fix the Oracle error QSM-01124: set operator materialized view, string, doesn’t have a marker column?

In this post, you’ll learn more about the Oracle ErrorQSM-01124: set operator materialized view, string, doesn’t have a marker column with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-01124: set operator materialized view, string, doesn’t have a marker column

Reason for the Error QSM-01124: set operator materialized view, string, doesn’t have a marker column

The specified set operator materialized view does not have a marker column.

How to fix the Error QSM-01124: set operator materialized view, string, doesn’t have a marker column ?

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

Add a marker column to the specified materialized view.