Count Distinct in Summarize Tool

[chris_cleckner]

It would be extremely helpful to add in a "Count Distinct" function into the summarize tool.  This would help tremendously when working with hierarchical data.

[LauraS]

Thanks for the suggestiong and the many votes, this will be available in 9.5 which will be released in January 2015

[MikaelO]

Can someone explain the role of the count distinct please.