Last Non Empty Affairs
Enterprise Edition of Analysis Services 2005 and 2008 supports semi-additive functions, such as LastNonEmpty, LastChild, and so on, to facilitate working with semi-additive measures, such as account balances and inventory snapshots. For example, the screenshot below shows LastNonEmtpy in action. To demonstrate this, I added a Last Sales measure to the Internet Sales measure group in the Adventure Works cube and set its AggregationFunction property to LastNonEmpty. Of course, this doesn't make much sense because sales amounts are fully additive but it's OK for demo purposes.