Aggregate and advanced queries for a CRM custom view

I have the following 3 questions:

1. Is it possible to create a view in CRM 2011 that has GROUP BY and HAVING COUNT(*)=X logic, as we can do in SQL? if so, how do I do this?
2. When adding columns from other entities when designing a custom view (or advanced find), I select the columns from the child entity, and am able to select columns from parent entities.  However, some of the entities where we have a referential relationship do not appear in the Add Columns dialog. 
3. In a custom view, how do I select an account name and the price of a product using the price list that is saved in the Account record?