How to fix the Oracle error PLS-00117: Duplicate connect-by clause in table expression?

In this post, you’ll learn more about the Oracle ErrorPLS-00117: Duplicate connect-by clause in table expression with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PLS-00117: Duplicate connect-by clause in table expression

Reason for the Error PLS-00117: Duplicate connect-by clause in table expression

Two or more CONNECT BY clauses were found in a SELECT statement. The CONNECT BY clause defines a relationship used to return rows in a hierarchical order. The relationship can contain two expressions separated by a relational operator (such as = or !=), but a statement can contain only one CONNECT BY clause.

How to fix the Error PLS-00117: Duplicate connect-by clause in table expression ?

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

Remove one of the CONNECT BY clauses and, if necessary, separate expressions by a relational operator.