…s from the `FROM` clause
As of http://technet.microsoft.com/en-us/library/ms189461.aspx :
> Specifies a column or expression on which to sort. order_by_expression can only refer to columns made available by the FROM clause. An integer cannot be specified to represent a column name or alias.
That basically means that table aliases used to fetch the selected columns should NOT be included in the `OVER` clause.