Calculating the year-to-date (YTD) value

In this recipe, we will look at how to calculate the YTD value of a measure, that is, the accumulated value of all dates in a year up to the current member on the date dimension. An MDX function YTD() can be used to calculate the Year-To-Date value, but not without its constraints.

In this recipe, we will discuss the constraints when using the YTD() function and also the alternative solutions.

Getting ready

Start SSMS and connect to your SQL Server Analysis Services (SSAS) 2016 instance. Click on the New Query button and check that the target database is Adventure Works DW 2016.

In order for this type of calculation to work, we need a dimension marked as Time in the Type property, in the Dimension structure tab of SQL Server Data Tools (SSDT). That should not be a problem because almost every database contains at least one such dimension and Adventure Works is no exception here. In this example, we're going to use the Date Dimension. We can verify in...