Suppose that I have a database which name is testdb in test server.
I also 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?
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]
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.
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 further you can select data from linked server:
select * from [linked_server_name].[database].[schema].[table]
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