TL;DR: duplicate your Date dimension, set it to "Day of Week" and then add it to your Blended Data Source.


  • Go to Resources > Manage added data sources > Pick your App Store data source

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- Duplicate your Date dimension and call it "Date - Day of Week" and it's type to "Day of Week"

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- Add the new Date dimension to your Blended Data- Add the dimension to your table

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- Voilà

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