How to fix the Oracle error QSM-01039: selection present on right hand side of an outer join?

In this post, you’ll learn more about the Oracle ErrorQSM-01039: selection present on right hand side of an outer join with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-01039: selection present on right hand side of an outer join

Reason for the Error QSM-01039: selection present on right hand side of an outer join

Query cannot be rewritten if any predicate contains a selection on the right hand side of an outer join.

How to fix the Error QSM-01039: selection present on right hand side of an outer join ?

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

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