https://www.dotnetzone.gr:443/cs/blogs/ppolyzos/archive/2016/07/30/cross-database-queries-in-azure-sql-databases.aspxIn Azure if you have two or more SQL Databases and you want to perform a query across them, you might come across the following error: [crayon-579cfaea2349f498907233/] In order to perform cross database queries among SQL Azure databases you need to useenCommunityServer 2.1 SP3 (Build: 20423.1)