Joining tables from different servers

Question

Any suggestions how to join tables from different servers in stored procedure?

Answer 1

You have to first link two servers before joining the tables. Once they are linked, you can just use the below query and replace server, database & table names.

Remember to execute the below sql in DB2:

EXEC sp_addlinkedserver DB1
GO

-- below statement connects sa account of DB2 to DB1
EXEC sp_addlinkedsrvlogin @rmtsrvname = 'DB1', @useself = 'false', @locallogin = 'sa', @rmtuser = 'sa', @rmtpassword = 'DB1 sa pwd'
GO

SELECT a.columns 
FROM DB1.database_name.dbo.table_name a
INNER JOIN DB2.database_name.dbo.table_name b
ON a.columnId = b.columnId
GO

Linking servers - http://msdn.microsoft.com/en-us/library/ms188279.aspx