How do you join tables from two different SQL Server instances in one SQL query [duplicate]

Answer 1

The best way I can think of to accomplish this is via sp_addlinkedserver. You need to make sure that whatever account you use to add the link (via sp_addlinkedsrvlogin) has permissions to the table you're joining, but then once the link is established, you can call the server by name, i.e.:

SELECT *
FROM server1table
    INNER JOIN server2.database.dbo.server2table ON .....

Answer 2

If you are using SQL Server try Linked Server

Answer 3

You can create a linked server and reference the table in the other instance using its fully qualified Server.Catalog.Schema.Table name.