Database Reference
In-Depth Information
3. Specify the FullAlternateDateKey column as the Date column.
4. Now you can use the newly defined date table in your calculations.
5. To create a previous year's sales calculation, click on the FactInternetSales
table.
6. Click on any of the cells in the Measure Grid and add the following calcula-
tion:
Previous Year
SalesAmount:=CALCULATE(sum([SalesAmount]),
PREVIOUSYEAR(DimDate[FullDateAlternateKey]))
7. Change the value of the Format option of the measure in the Properties
window to Currency .
8. Deploy your model to the server.
The CALCULATE command is one of the most powerful commands available in DAX;
it allows you to specify calculations that use filters. In the previous example, it cre-
ates a sum of the sales amount but filters the calculation using the results of the
PREVIOUSYEAR command.
Note
There are several other filter functions available that can be used to create ad-
vanced calculations in DAX; for a reference of them, refer to the online manual
at http://technet.microsoft.com/en-us/library/ee634807(v=sql.105).aspx .
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