How to fix the Oracle error QSM-02137: agg(expr) requires correspondng STDDEV(expr) function?

In this post, you’ll learn more about the Oracle ErrorQSM-02137: agg(expr) requires correspondng STDDEV(expr) function with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-02137: agg(expr) requires correspondng STDDEV(expr) function

Reason for the Error QSM-02137: agg(expr) requires correspondng STDDEV(expr) function

The capability in question is not supported when the materialized view uses certain aggregate functions but omits an invocation of the STDDEV function on the same argument.

How to fix the Error QSM-02137: agg(expr) requires correspondng STDDEV(expr) function ?

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

Add the STDDEV function to the select list.