Learn the motive and how to unravel the ORA-01437 error message in Oracle.
Description
When you come upon an ORA-01437 error, the following error message will appear:
ORA-01437: cannot have join with CONNECT BY
Cause
You tried to use a CONNECT BY clause while joining extra than one desk in the SELECT statement. If you use a CONNECT BY clause, you can solely query one table.
Resolution
The option(s) to resolve this Oracle error are:
Option #1
Remove either the be a part of or the CONNECT BY clause from your SELECT statement.