Want to know what really happens when you execute your LINQ queries? Curious how the same query expression can target either in-memory data or relational data? In this talk, we use Reflector and other tools to reveal exactly how the compiler translates LINQ query expressions. Gain a deeper understanding of the functional roots of LINQ, as we see how lambda expressions enable the elegant syntax of LINQ to Objects. Then find out what's the same and what's radically different as we explore LINQ to SQL and the expression trees that make it tick.