I need to add a pseudocolumn on an interactive grid, so I need to know which parameters must be set to make it work. This pseudocolumn is based on the following instruction: row_number() over (partition by column group by column). I tried to add this pseudocolumn in my select list of columns, however it is causing error while saving because this content is not related to any database column at the table. Previous attempts led to an ORA-30483 (window functions are not allowed here) error. Thanks in advance.