Tag: cross database query

You can't query across databases in Azure SQL Database... or can you? Let's check. I've created two new databases on an existing server: I've created two tables on each respective database: CREATE TABLE dbo.DB1Table ( ID INT IDENTITY(1, 1) NOT NULL PRIMARY KEY, Val VARCHAR(50) ); CREATE TABLE dbo.DB2Table ( ID INT IDENTITY(1, 1) NOT NULL PRIMARY KEY, Val VARCHAR(50) ); Now, let's query the DB2 table from the DB1 database: SELECT * FROM DB2.dbo.DB2Table AS dt; And here's the lovely error message: Msg 40515, Level 15, State 1, Line 35 Reference to database and/or server name in 'DB2.dbo.DB2Table' is not supported in this version of SQL Server. So, like I said, you can't do three part name cross-database queries in Azure SQL Database... oh wait, that's not quite what I said…