optional CCK field automatically replacing another field in a View

I have a content type with 2 CCK text area fields.

The first field is always filled. The second fields is optional.

Now: I have 2 Views.

In the first View the first field is always displayed.

In the second View the first 2 lines of the first 开发者_如何转开发field are displayed. However if the second field is filled, the first field should be ignored.

How can I make this. I need an option in the content type specifying if I should use the second field rather than the first one ? (For the second view) I hope it is clear. Thanks

Create a template for the view and use if and else statements to only show what you want to be shown.