If NOCOUNT is set to true this number may not reflect the actual rows affected, also inserting and deleting the same row(s) may offset the number
Requirements
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2