With Tableau, Blends have been one of most important and difficult concepts to understand and execute. Tableau does a great job in providing color and visual cues in identifying the Main Source (Primary) and Dependent Sources (Secondary) after fields from both data sources come into the view.
Many of us after using blends in variety of cases, still have issues with them and constantly try to resolve them with hacks and tricks. One such case is or was ‘Filtering across data sources’ and it is a huge necessity for most organizations. With Tableau as a tool constantly evolving and adding more features for every new version and release, Blends and Cross Data Filters have found significant improvements.