The Jedox Data Filter (DFilter) is one of the more important filters that you can use in subsets. The Data Filter allows you to query the cube dynamically query a cube and order/filter your dimension based on this query. This is really handy  when you need to build a report based upon data, such as a top/bottom element listing, a zero suppressed report, or sorting your report based on the data.

When setting up this subset, you need to select the cube and dimensions that the dfilter will be based on. Make sure you select the right one, or you may not get the result you expect…

After you have selected the cube, the next thing to do is to select the dimension elements from each dimension for your dfilter.

To optimise performance of the data filter, ensure you specify an element for each of the dimensions . Like all filters, you can make your selections dynamic based on cells on your report:

Finally, you can select calculation options (sum, count the result, etc), specify the top or bottom count or choose how to sort the result. A completed report performing a top/bottom filter and sorting is here.

Data filters can really improve the dynamism of your reports and once you start using them , you will find that a lot of reports can benefit by the inclusion of this filter in your subsets.