Creating the Reports sheet

Now that we've created our Dashboard and Analysis sheets, it is time to create the final sheet from our DAR setup: the Reports sheet.

As was defined in the requirements, we will be creating the following objects:

  • Aggregated flights per month
  • KPIs per carrier

But before we begin creating new objects, let's first take a quick look at how we can re-use the expressions that we have created earlier.


By now you may have noticed that we are using the same expressions in many places. While we could simply type in the same expression every time, this approach has two disadvantages:

  • We risk introducing (minor) variations in the way expressions are calculated. For example, one "revenue" expression might contain sales tax while ...

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