OK, this one looks a little crazy, but just wanted to check if there is something on these lines. We were exploring aggregations as we worked on extracting some usage patterns on our IIS logs, and one of the things we felt needed was counting the unique days in which the same user has visited ou…

Is it possible to achieve a cardinality aggregation on a date histogram?

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Is it possible to achieve a cardinality aggregation on a date histogram?