How to fix the Oracle error QSM-01298: materialized view string clause more restrictive than query string clause?

In this post, you’ll learn more about the Oracle ErrorQSM-01298: materialized view string clause more restrictive than query string clause with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-01298: materialized view string clause more restrictive than query string clause

Reason for the Error QSM-01298: materialized view string clause more restrictive than query string clause

The materialized view contains a selection condition in the WHERE or HAVING clause that is more restrictive than the corresponding selection condition in the request query.

How to fix the Error QSM-01298: materialized view string clause more restrictive than query string clause ?

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

Change the selection criteria in the request query to be at least as restrictive as the selection criteria in the materialized view, or drop and recreate the materialized view using less restrictive selection criteria.