Learn the cause and how to resolve the ORA-01785 error message in Oracle.
When you encounter an ORA-01785 error, the following error message will appear:
The option(s) to resolve this Oracle error are:
Rewrite the SELECT statement so that the ORDER BY clause references valid column numbers from your SELECT list. Remember that the first item in your SELECT list is column 1, the second is column 2, and so on.
For example, if you had tried to execute the following SELECT statement:
SELECT supplier_id, supplier_name FROM suppliers ORDER BY 3;
You would receive the following error message:
Since there are only 2 items in your SELECT list, you can reference column 1 or column 2, but not column 3. The following SQL statement would be correct:
SELECT supplier_id, supplier_name FROM suppliers ORDER BY 1, 2;