How to fix the Oracle error ORA-30485: missing ORDER BY expression in the window specification?

In this post, you’ll learn more about the Oracle ErrorORA-30485: missing ORDER BY expression in the window specification with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30485: missing ORDER BY expression in the window specification

Reason for the Error ORA-30485: missing ORDER BY expression in the window specification

Either the ORDER BY expression is mandatory for this function, or there is an aggregation group without any ORDER by expression.

How to fix the Error ORA-30485: missing ORDER BY expression in the window specification ?

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

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