SET XACT_ABORT
http://msdn.microsoft.com/zh-cn/library/ms188792.aspx
锁兼容性
http://msdn.microsoft.com/zh-cn/library/ms186396.aspx
DBCC DROPCLEANBUFFERS
http://technet.microsoft.com/zh-cn/library/ms187762.aspx
SET SHOWPLAN_ALL
http://technet.microsoft.com/zh-cn/library/ms187735.aspx
COALESCE
http://msdn.microsoft.com/zh-cn/library/ms190349.aspx