如何知道MSSql Server是否安裝在Windows XP或7中？

Question

在安裝MSSQLSERVER之前，我想知道MSSQLSERVER是否已經安裝在系統中。這應該在C++或mfc中以編程方式完成。

如果是的MSSQLServer已經安裝在Windows下，那麼是否有任何可能的方式來獲得該服務器的MSSQL證書？

如果是這樣，請說明實現這一目標的方法是什麼？

UPDATE

我試圖安裝SQLSERVER 2005和SQL Server 2008在我的系統，但同時安裝的服務器。我查了註冊表路徑，但它包含了SOFTWARE\Microsoft\Microsoft SQL Server\90和MSSQLServer 2005爲SOFTWARE\Microsoft\Microsoft SQL Server\100MSSqlServer 2008。之前我安裝我的MSSQLServer如何檢查是否有任何的MSSQL Server版本安裝或沒有？

編輯

到現在我無語安裝在c編程的SQLSERVER ++。

我貼下面的代碼：

SHELLEXECUTEINFO ShExecInfo; 
ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO); 
ShExecInfo.fMask = NULL; 
ShExecInfo.hwnd = NULL; 
ShExecInfo.lpVerb = NULL; 
ShExecInfo.lpFile = L"D:\\Softies\\SQLEXPR.EXE"; 
ShExecInfo.lpParameters = L"/qn addlocal=all InstanceName=SQLEXPRESS DisableNetworkProtocols=0 SECURITYMODE=SQL SAPWD=root SQLAUTOSTART=1 SQLBROWSERAUTOSTART=1 ENABLERANU=0"; 
ShExecInfo.lpDirectory = NULL; 
ShExecInfo.nShow = SW_MAXIMIZE; 
ShExecInfo.hInstApp = NULL; 

ShellExecuteEx(&ShExecInfo); 

int nResult=0; 
nResult = (int)ShExecInfo.hInstApp; 
if(nResult >32) 
cout<<"EXE executed successfully"<<endl; 
else 
cout<<"Reason for failure is" <<nResult<<endl; 
return 0; 

Answer 1

• 無法獲取服務器的證書，除了蠻力

但

如果你是本地管理員 - 你可以使用啓動鍵-f從命令行啓動sql server並嘗試使用它 - 不能保證，bu你可以試試。

• 我有檢查一些默認的SQL Server實例的代碼，因此它可以很容易地通過您的需要和C++/

  private void GetSqlDefaultInfo(string ServerName, string InstanceName) 
  { 
  
      InstanceName = string.IsNullOrEmpty(InstanceName) ? "MSSQLSERVER" : InstanceName; 
  
      if (string.IsNullOrEmpty(ServerName)) 
       ServerName = Environment.MachineName; 
      using (var registryKey = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, ServerName)) 
      { 
       object sqlInstance; 
       using (var subKey = registryKey.OpenSubKey(@"SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\SQL")) 
        sqlInstance = subKey.GetValue(InstanceName); 
       if (sqlInstance != null && !string.IsNullOrEmpty(sqlInstance.ToString())) 
       { 
        var sqlPathKey = string.Format(@"SOFTWARE\Microsoft\Microsoft SQL Server\{0}\MSSQLServer", 
                sqlInstance); 
        object defaultData, defaultLog, backupDirectory, sqlPath; 
        using (var subKey = registryKey.OpenSubKey(sqlPathKey)) 
        { 
         defaultData = subKey.GetValue("DefaultData"); 
         defaultLog = subKey.GetValue("DefaultLog"); 
         backupDirectory = subKey.GetValue("BackupDirectory"); 
        } 
        sqlPathKey = string.Format(@"SOFTWARE\Microsoft\Microsoft SQL Server\{0}\Setup", sqlInstance); 
  
        using (var subKey = registryKey.OpenSubKey(sqlPathKey)) 
         sqlPath = subKey.GetValue("SQLDataRoot"); 
        DataFilePath = defaultData != null 
             ? defaultData.ToString() 
             : Path.Combine(sqlPath.ToString(), "Data").TrimEnd('\\'); 
  
        LogFilePath = defaultLog != null 
             ? defaultLog.ToString() 
             : Path.Combine(sqlPath.ToString(), "Data").TrimEnd('\\'); 
        FTSIndexFilePath = DataFilePath; 
        ContentFilePath = DataFilePath; 
        BackupFilePath = backupDirectory != null 
             ? backupDirectory.ToString() 
             : Path.Combine(sqlPath.ToString(), "Backup").TrimEnd('\\'); 
       } 
      } 
  }