Duplicate columns in Oracle query using row limiting clause Duplicate columns in Oracle query using row limiting clause oracle oracle

Duplicate columns in Oracle query using row limiting clause


Seems in this case when you are using the row limiting clause, Oracle internally calling the ROW_NUMBER() function where it using the column name in OVER clause Like ROW_NUMBER OVER(ORDER BY ID). because of this you are getting the ORA-00918 error.


I noticed that you have an implicit join. It would be interesting to see if the problem goes away when joining explicitly. I'm wondering if behind the scenes Oracle is doing a join based on id=id and not using the table aliases you assigned them.

That would also explain the column aliases fixing the issue. Try explicitly joining; that could force oracle to use the table aliases and resolve the ambiguity it thinks it sees.