如何找回SQL Server实例安装时的序列号

    use master
    GO
    exec xp_regread 'HKEY_LOCAL_MACHINE','SOFTWARE\Microsoft\Microsoft SQL Server\110\Tools\Setup','ProductCode'
    exec xp_regread 'HKEY_LOCAL_MACHINE','SOFTWARE\Microsoft\Microsoft SQL Server\110\Tools\Setup','DigitalProductId'
    GO