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

Oracle Error Message

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

Reason for the Error

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

Solution

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