Скачать или смотреть NEW DATA MODELING IN TABLEAU -2020.2 (Part1-Aggregation)

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NEW DATA MODEL
Combine multiple tables for analysis with relationships

With the recent Tableau 2020.2 release, Tableau has introduced some new data modelling capabilities, with relationships. Relationships are an easy, flexible way to combine data from multiple tables for analysis. You define relationships based on matching fields so that during analysis, Tableau brings in the right data from the right tables at the right aggregation—handling level of detail for you. A data source with relationships acts as a custom data source for every viz, but you only build it once.

I had written a blog quite a long back defining the difference between Blending and Join, please feel free to click on the below image to find the original blog to understand this blog in a better way. In case, if you are already aware then you can skip as well. Basically I have shown how the JOIN results can duplicate in the case of different granularities giving abnormal output which can be AVOIDED with the new DATA MODEL with RELATIONSHIPS , let us test it together with our old example