You have a method that contains a LINQ query. If you use the right interface, other developers can piggyback on your method with their LINQ queries without losing efficiency.

Peter follows up -- yet again – on a column on how to group results with LINQ using the SQL-like syntax with the same solution using the method-based syntax. And, no, you're not seeing double.

If LINQ were smart enough-- and it's pretty smart in other areas, at least-- it'd be feasible to see certain of these operations pushed out to the database server in the SQL.