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When creating a multidimensional analytical object, sometimes you might need to use the distinct count measure. Aggregating measures now allow you to calculate the Distinct Count for the field data you are aggregating. For example, to know the number of unique users who buy products of certain type. Since one customer may buy multiple products, the distinct count measure will be useful in such cases.
In case of distinct count field selection, it can be aggregated by ignoring hierarchy or considering hierarchy of the selected dimension field.
Example, in case of a hierarchy as Country > State > City; if cube designer creates a distinct count measure for 'City' field and City name is common in two states then at Country level, the distinct count can be aggregated to 1 if 'Ignore Hierarchy' check box is checked and can be counted to 2 if 'Ignore hierarchy' check box is unchecked.
The below image shows Analytical Object in case the hierarchy is ignored.
The count of cities with a common name would appear as 1 at the Country level on the report in case the hierarchy is ignored
Alternately, the count of cities with a common name would appear as 2 at the Country level in case the hierarchy is not ignored.
