Exercise: Rank regions by number of sales using the RANKX function

This exercise is provided to allow potential course delegates to choose the correct Wise Owl Microsoft training course, and may not be reproduced in whole or in part in any format without the prior written consent of Wise Owl.

The answer to the exercise will be included and explained if you attend the Wise Owl course listed below!

Category ==> SSAS - tabular  (29 exercises)
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).

You need a minimum screen resolution of about 700 pixels width to see our exercises. This is because they contain diagrams and tables which would not be viewable easily on a mobile phone or small laptop. Please use a larger tablet, notebook or desktop computer, or change your screen resolution settings.

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.

This page has 0 threads Add post