How to fix the Oracle error ORA-30489: Cannot have more than one rollup/cube expression list?

In this post, you’ll learn more about the Oracle ErrorORA-30489: Cannot have more than one rollup/cube expression list with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30489: Cannot have more than one rollup/cube expression list

Reason for the Error ORA-30489: Cannot have more than one rollup/cube expression list

GROUP BY clause has more than one rollup/cube expression list.

How to fix the Error ORA-30489: Cannot have more than one rollup/cube expression list ?

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

Modify the query such that only one rollup/cube expressions appear per sub-query.