If you’ve ever faced performance issues or unexpected data duplication in Tableau, Cartesian joins might be the culprit. Jim Dehner walks through common issues (including unnecessary row multiplication and slow query performance), while also offering practical alternatives that improve efficiency.
Jim provides solutions to help you optimise your data models. Whether you’re a beginner struggling with joins or an experienced Tableau user looking to fine-tune performance, these insights will help you build faster, cleaner, and more efficient dashboards. Read on and start improving your Tableau workflows today!





