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探讨:如何查看和获取SQL Server实例名

一、查看實例名時可用

1、服务—SQL Server(实例名)，默认实例为(MSSQLSERVER)

或在连接企业管理时-查看本地实例

2、通過注冊表
HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Microsoft SQL Server/InstalledInstance

3、用命令
sqlcmd/osql
sqlcmd -L
sqlcmd -Lc
osql -L

获取可用實例,以下舉一個例子，根據自己情況改

复制代码 代码如下:

DECLARE @Table TABLE ( instanceName  sysname NULL)

insert @Table EXEC sys.xp_cmdshell sqlcmd -Lc

--LEFT(@@serverName,CHARINDEX(/,@@serverName+/)-1) 替代為本機名就行了 , 根據實例命名規則判斷

SELECT * FROM @Table WHERE instanceName LIKE   LEFT( @@serverName , CHARINDEX ( / , @@serverName + / )- 1)+ %


二、

--1.
SELECT SERVERPROPERTY(InstanceName)

--2
sp_helpserver

--3
select @@SERVERNAME

--4
SELECT * FROM SYS.SYSSERVERS

--5
SELECT * FROM SYS.SERVERS

三、

EXECUTE xp_regread @rootkey=HKEY_LOCAL_MACHINE,
@key=SOFTWARE/Microsoft/Microsoft SQL Server/Instance Names/SQl,
@value_name=MSSQLSERVER

四、

Select Case
When SERVERPROPERTY (InstanceName) Is Null Then @@SERVERNAME
Else SERVERPROPERTY (InstanceName)
End

五、在本地或网络得到所有实例名

1、You can do with registry reading , like my code

复制代码 代码如下:

using System;
using Microsoft.Win32;

namespace SMOTest
{
    class Program
    {
      static void Main()
      {
        RegistryKey rk = Registry.LocalMachine.OpenSubKey(@"SOFTWARE/Microsoft/Microsoft SQL Server");
        String[] instances = (String[])rk.GetValue("InstalledInstances");
        if (instances.Length > 0)
        {
           foreach (String element in instances)
           {
              if (element == "MSSQLSERVER")
                 Console.WriteLine(System.Environment.MachineName);
              else
                 Console.WriteLine(System.Environment.MachineName + @"/" + element);
           }
        }
      }
    }
}


2、You can use SQLDMO.dll to retrieve the list of SQL Server instances.  The SQLDMO.dll can be found from the "C:/Program Files/Microsoft SQL Server/80/Tools/Bin" folder. Refer this assembly in your project and the following snippet would return a List Object containing the sql server instances.
复制代码 代码如下:

public static List GetSQLServerInstances()
{
NameList sqlNameList = null;
Application app = null;


var sqlServers = new List();
try
{
app = new ApplicationClass();
sqlNameList = app.ListAvailableSQLServers();
foreach (string sqlServer in sqlNameList)
sqlServers.Add(sqlServer);
}
catch(Exception ex)
{
//play with the exception.
}
finally
{
if (sqlNameList != null)
sqlNameList = null;
if (app != null)
app = null;
}
return sqlServers;
}