SELECT * FROM [DestinationDBName].dbo.DestinationTableName

EXEC sp_addlinkedserver 
@server='DestinationDBAlias',--目标数据库的别名，在连接并登录后，就可以用它来访问数据
@srvproduct='',
@provider='SQLOLEDB',
@datasrc='DestinationServerIP\ServerName'--通常用"IP\端口名"组成,如果服务器上只装了一个MSSQL SERVER，或者装了多个MS SQLSERVER，但要访问的是默认端口，就不用加端口名

EXEC sp_addlinkedsrvlogin 
@rmtsrvname='DestinationDBAlias',--注意这里的名字应与第一步sp_addlinkedserver中@server值一致
@useself='false',
@locallogin=NULL,
@rmtuser='UserName',
@rmtpassword='Password'

SELECT * FROM [DestinationDBAlias].dbo.DestinationTableName

EXEC sp_dropserver 
@server='DestinationDBAlias',--注意这里的名字应与第一步sp_addlinkedserver中@server值一致
@droplogins='droplogins'

SELECT * FROM OPENDATASOURCE
('SQLOLEDB', --provider_name
'Data Source=DestinationServerIP;User ID=UserName;Password=Password' --provider_string(datasource;user_id;password)
).[DestinationDBAlias].dbo.DestinationTableName

SELECT * FROM OPENROWSET
('SQLOLEDB',--provider_name
'DestinationServerIP';'UserName';'Password',--provider_string(datasource;user_id;password)
'SELECT * FROM [DestinationDBAlias].dbo.DestinationTableName')--query_string