SSAS - tabular | Changing query context exercise | Rank regions by number of sales using the RANKX function

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Software ==> SSAS - tabular  (29 exercises)
Version ==> SSAS 2012 and later
Topic ==> Changing query context  (2 exercises)
Level ==> Average difficulty
Course ==> SSAS - Tabular Model
Before you can do this exercise, you'll need to download and unzip this file (if you have any problems doing this, click here for help).

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If you haven't already done so, run the SQL script in the above folder in SQL Server Management Studio to generate a database (not for commercial use or copying) called MAM

Again if you haven't already done so, create a new project called BaseModel, and import the following tables: tblAnimal, tblCentre, tblCentreType, tblPos, tblProduct, tblQuadrant, tblRegion, tblSpecies, tblStore, tblTown, tblTransaction.  Delete any measures already created.

Create a measure which ranks regions according to the count of the number of transactions.  The syntax of the RANKX function is shown below:

The RANKX function

Only the first two arguments are compulsory.

Use this measure to show the following pivot table (there's very little variety between species):

Ranking by region

If your pivot table shows 1 in every cell, you're ranking the number of transactions within the current query context, rather than against all of the regions in the region table.

If you want to keep a copy of what you've done, use DAX Editor to create a copy of your measures with extension .dax called Suspiciously similar data, and save your workbook with the same file name.

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