Oracle Error QSM-02135: agg(expr) requires correspondng AVG(expr) function

Oracle Error Message

QSM-02135: agg(expr) requires correspondng AVG(expr) function

Reason for the Error

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

Solution

Add the AVG function to the select list.