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Exercise: Work out total sales as a percentage of quadruped sales
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If you haven't already done so, run the SQL script in the above folder (copying and commercial use prohibited) to generate a database called MAM.
Create a data model similar to the one below (it doesn't matter what fields you hide from client tools, as long as you include these tables):
The tables to include, allowing us to link quadrants to animals.
Now create this pivot table showing the number of legs for each animal across the top, and the quadrant name down the left-hand side:
See below for notes.
This pivot tables shows:
- The total quantity sold for each cell's query context; and
- The percentage this constitutes of the total for quadrupeds.
Use the CALCULATE function for the denominator for the ratio.
If you've got this working, add another calculated field which shows the percentage of the total for all leg types, using CALCULATE and ALL:
Reassuringly, the total on the right is 100%. Quadrupeds constitute just over 54% of total sales.
When you've finished, save this query as Four legs good, and close it down.