Hi,
I would do the following steps to define the “**CASE**” statement over the field of view parameter:
* First, I would create a [“**Selection view**”](https://community.denodo.com/docs/html/browse/8.0/en/vdp/administration/creating_derived_views/creating_selection_views/creating_selection_views) over the derived view that is having the “**View Parameter**”.
* I would navigate to the “**Edit->Output**” tab.
* Then, I would select the “**View Parameter**” field and define the “case” statement in the field expression.
Hence at the moment in the Denodo Platform, defining the **case** statement
over the “**View Parameter**” field is possible only by creating a derived view over the view that includes the “**View Parameter**”.
For more information, you can refer to the [**Parameters of Derived Views**](https://community.denodo.com/docs/html/browse/8.0/en/vdp/administration/creating_derived_views/creating_selection_views/creating_selection_views#parameters-of-derived-views#:~:text=Parameters%20of%20Derived%20Views) of the Virtual DataPort Administration guide.
Hope this helps!
