How to fix the Oracle error ORA-30454: summary contains STDDEV without corresponding SUM & COUNT?

In this post, you’ll learn more about the Oracle ErrorORA-30454: summary contains STDDEV without corresponding SUM & COUNT with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30454: summary contains STDDEV without corresponding SUM & COUNT

Reason for the Error ORA-30454: summary contains STDDEV without corresponding SUM & COUNT

Incremental refresh of summaries with STDDEV(X) requires COUNT(X) and SUM(X) columns to be included in the summary definition

How to fix the Error ORA-30454: summary contains STDDEV without corresponding SUM & COUNT ?

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

Make sure that the required columns are part of the summary definition if incremental refresh capability is desired.