Create Linked Server SQL Server 2008

Creating a linked server in SQL Server 2008 is a great way to run CRUD statements against a completely different remote server. This method relies on Windows Authentication.

This is only one way to do it. There are others. And, if you are going to run SQL statements against a linked server from a web app, you need to have the permissions set up properly. From the article “How do I… Query foreign data using SQL Server’s linked servers?” by Susan Harkins:

The biggest catch to all this simplicity is, as always, security. If you’re working with Windows Authentication, the system accommodates well. If the user has the appropriate permissions for the servers and data sources, linked queries will work.

If you have users outside the Windows Authentication environment, you can use a linked login. Create a standard login and assign the appropriate permissions on the remote server.

Setting It Up

  1. Go to “Server Objects” of the database server where the linked server will be added and right click on “Linked Servers”. Select “Add New Linked Server”.
  2. In the “General” tab, add a name for the new linked server in the “Linked Server” field.
  3. Select “Other data source”and for “Provider” select “Microsoft OLE DB for SQL Server”
  4. For “Product Name” type in “SQLOLEDB”
  5. In the “Data Source” field, enter the IP address of the server to be linked
  6. “Catalog” is the name of the database on the linked server and is optional
  7. Go to the “Security” tab and select “Be made using this security context”. Type in the remote login and credentials

Linked Server Step 1

Linked Server Step 2

Running Queries

To query against this server user the syntax:

SELECT * FROM [MY_LINKED_SERVER].[database_name].[dbo].[table_name]

Or, for a join, use linked table with an alias (example):

    [MY_LINKED_SERVER].[database_name].[dbo].[table_name] LinkedTable 
    ON Table.column = LinkedTable.column 

This is a start. Where you go from here is up to you.

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  1. January 24, 2012 at 11:01 am | Permalink
  2. Ras rass
    January 19, 2012 at 10:39 pm | Permalink

    nice post, :D
    but can you explain not only select the table but also how to exec store procedure ..
    many thanks

  3. Jason
    January 10, 2012 at 9:17 pm | Permalink

    Thanks! I had a hard time learning what to enter for the “Other database source” info.

  4. Rahul_Ettu
    December 28, 2011 at 6:22 am | Permalink

    Thanks for the POST. It is REALLY NICE.. WE Have solved our PRODUCTION ISSUE>>

    Very Very THanks..