Hierarchies can contain a lot of members. In this recipe we are going to show how to extract only the significant ones; members with the highest value for a certain measure.
This requirement is often necessary because not only does it allow end users to focus their efforts on a smaller set of members, the queries are much faster as well.
We'll base our example on the
TopCount() function, a function that returns the exact number of members as specified. In addition to that function, MDX has two more similar functions, namely
TopSum(). Contrary to
TopCount() function, these functions return an unknown number of members. In other words, they are designed to return a set of members based on their ...