| ERROR | Duplicate connect-by clause in table expression |
| CAUSE | 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. |
| ACTION | Remove one of the CONNECT BY clauses and, if necessary, separate expressions by a relational operator. |