SQL text cannot be represented in the grid pane and diagram pane

I am working on entity Model. I updated the view to entity model, but this view not showing the correct data. I searched on Google, and a few members suggested that add one more column to the view. So, I just added one column to the View: `row_number() over (order by Employee.EmployeeID) as PK,` In the Employee table the `EmployeeId` column is identity column. I run the entity model. Now, the view is showing correct data. The problem is when I see the view design in SQL, it is not showing. When I remove the `row_number()` from the view, it is showing in the design of the view.