How to fix the Oracle error ORA-30563: outer join operator (+) not allowed in select-list, CONNECT BY, or START WITH?

In this post, you’ll learn more about the Oracle ErrorORA-30563: outer join operator (+) not allowed in select-list, CONNECT BY, or START WITH with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30563: outer join operator (+) not allowed in select-list, CONNECT BY, or START WITH

Reason for the Error ORA-30563: outer join operator (+) not allowed in select-list, CONNECT BY, or START WITH

An attempt was made to reference (+) in select-list, CONNECT BY clause, or START WITH clause.

How to fix the Error ORA-30563: outer join operator (+) not allowed in select-list, CONNECT BY, or START WITH ?

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

Do not use the operator in select-list, CONNECT BY clause, or START WITH clause.