How to select data of a table from another database in SQL Server?

问题

Suppose, I have a database named testdb in test server. Also I have a database named proddb in prod server.

Now I want to select data of a table of testdb database from proddb database.

How can I do that in SQL Server?

Also, I can do it using database link in oracle. But how can do that in SQL Server?

回答1:

You need sp_addlinkedserver()

http://msdn.microsoft.com/en-us/library/ms190479.aspx

Example:

exec sp_addlinkedserver @server = 'test'

then

select * from [server].[database].[schema].[table]

In your example:

select * from [test].[testdb].[dbo].[table]

回答2:

In SQL Server 2012 and above, you don't need to create a link. You can execute directly

SELECT * FROM [TARGET_DATABASE].dbo.[TABLE] AS _TARGET

I don't know whether previous versions of SQL Server work as well

回答3:

I've used this before to setup a query against another server and db via linked server:

EXEC sp_addlinkedserver @server='PWA_ProjectServer', @srvproduct='',
@provider='SQLOLEDB', @datasrc='SERVERNAME\PWA_ProjectServer'

per the comment above:

select * from [server].[database].[schema].[table]

e.g.

select top 6 * from [PWA_ProjectServer].[PWA_ProjectServer_Reporting].[dbo].[MSP_AdminStatus]

回答4:

To do a cross server query, check out the system stored procedure: sp_addlinkedserver in the help files.

Once the server is linked you can run a query against it.

回答5:

Using Microsoft SQL Server Management Studio you can create Linked Server. First make connection to current (local) server, then go to Server Objects > Linked Servers > context menu > New Linked Server. In window New Linked Server you have to specify desired server name for remote server, real server name or IP address (Data Source) and credentials (Security page).

And feather you can select data from linked server:

select * from [linked_server_name].[database].[schema].[table]

回答6:

Try using OPENDATASOURCE The syntax is like this:

select * from OPENDATASOURCE ('SQLNCLI', 'Data Source=192.168.6.69;Initial Catalog=AnotherDatabase;Persist Security Info=True;User ID=sa;Password=AnotherDBPassword;MultipleActiveResultSets=true;' ).HumanResources.Department.MyTable    

来源：https://stackoverflow.com/questions/720339/how-to-select-data-of-a-table-from-another-database-in-sql-server