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Understanding subsets

Conceptual information about subsets.
When using a subset, please keep the following things in mind:
  • All of your benchmarks now relate to your subset, not to the entire dataset, which is much more useful when analyzing a specific subset. See Understanding Benchmarks .
  • Using a subset affects all of your workspaces because the subset is applied globally to Data Workbench.
  • Subsets affect only metrics and denormal dimensions, not normal dimensions.
  • When using Report, subsets do not affect the data in reports published for others to view.
  • Once applied, your subset is in effect for all subsequent work in the profile, including the next time that you open this instance of Data Workbench, until you remove it.
  • The only place that indicates that a subset has been applied is the context menu that you reach by right-clicking within a workspace.
  • You must be working online to change or remove a subset. If you are working offline and have applied a subset, you cannot view results from the entire dataset. See Working Offline and Online .
    The size of your subset is limited to the amount of data in your filter that resides on a single Data Workbench server. Therefore, if your dataset spans a Data Workbench server cluster, data for your subset comes from only one Data Workbench server in the cluster.
A user at a large retailer wants to create a subset (local cache) of one particular work week of data and then run queries only on that week of data. To do this, the user creates a subset for the days of interest.
The following example shows you a bar graph of Visitors over time and a Traffic metric legend. The first figure contains no selections: all of the data in the dataset is represented. The second figure shows data for a subset of Days = by Visitors, in which Days is based on a selection of the elements April 1st through April 5th in the Day dimension.