I am converting some sql to LLBL / LINQ

I have this SQL sinppet but am not sure how to create an ILLBLGenProQuery 'Where' clause to handle it.

dbo.MinDate(ISNULL(SOX_Parent.EndDate,'1/1/2200'),
                       ISNULL(SOX_Child.EndDate, '1/1/2200')
     )  < @TheDate

Any ideas?

           var q = (ILLBLGenProQuery)
               from t in linq.SoxParent
               where  ??????

You have tp use function mappings. Please read the LINQ2LLBL documentation manual for more info.