This article lists the exact databases that cannot use cross-database joins, Assuming you have a mongodb odbc driver, you may run into mixed results trying to use cross-db joins. I would try it and let us know if you run into any issues:
Thank you for your reply.
I am using tableau 9.3 and using data blending to compare the same table from different server. The table have same variables and structure. Using the dashboard/report , I want to show the difference between same variables from table placed in different servers. Need to compare same variables and if there is any difference found against primary id(in my case freight bill number) then that information should be highlighted in dashboard.
Could you please share your valuable ideas and some important link that can help me to accomplish this task. Your suggestion would be value added.