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Tableau 10.0 Best Practices by Jenny Zhang

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Data blending versus join

In the previous section, we learned about the important concept of primary and secondary data sources. After understanding this concept, we can start blending data using the process of data blending. But you may wonder that both data blending and join and combine data together, when should I use which and why? Now let's answer these questions.

When to use data blending instead of joining

Joining can improve performance if the two connections in the workbook are from the same data source. Joining is also better when you try to add data to an existing data source in the same data connection. However, sometimes joining may not work as well as data blending. Common scenarios in which you should choose data blending instead ...

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