In general, it's best not to rely on the view designer when your SQL gets complex. I've noticed problems especially with joins and using AS syntax in the field list. But there's no real reason to worry just because the view designer can't figure out a view.

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>>Sometimes when I create the View in the View-Designer from the Database-Designer I'm able to create the View and running the Query but later when I open the View for editing the View-Designer states that the View is invalid and the different joining-keys (from MainTbl and ChildTbl) doesn't exists.
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>The most probable reason here is that View Designer does not support parallel joins from one table to 2 or more others. It shows "Column someColumn is not found" error in this case.
>You can create those views programmatically.
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>Nick