Hello, I want to count all unique values of a field. the Cardinality Aggregation with this request "aggs": { "1": { "cardinality": { "field": "user_id" } } }, "size": 0 } gives : "value" : 192388 But when I do some calculation in my client: body: { …

Cardinality Aggregation gives wrong number?

Christian_Dahlqvist (Christian Dahlqvist) February 5, 2019, 12:31pm 3

This post contains a good discussion of why some type of aggregations in Elasticsearch are approximate.

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