Query optimization in microsoft SQL server PDW. - Srinath Shankar; Rimma V. Nehme; Josep Aguilar-Saborit; Andrew Chung; Mostafa Elhemali; Alan Halverson; Eric Robinson; Mahadevan Sankara Subramanian; David J. DeWitt; César A. Galindo-Legaria (SIGMOD Conference, 2012)