# Unique count on a term more than documents? Is that possible?

**URL:** <https://discuss.elastic.co/t/unique-count-on-a-term-more-than-documents-is-that-possible/132497>\
**Category:** Elasticsearch\
**Created:** [May 18, 2018, 1:55pm UTC](https://discuss.elastic.co/t/unique-count-on-a-term-more-than-documents-is-that-possible/132497 "2018-05-18T13:55:02Z")\
**Posts on this page:** 1\
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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [May 21, 2018, 8:12am UTC](https://discuss.elastic.co/t/unique-count-on-a-term-more-than-documents-is-that-possible/132497/4 "2018-05-21T08:12:48Z")

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Document count is not approximated, so will be accurate. The cardinality aggregation can be exact as long as you have all your data in a single shard. For a discussion on why this is not possible in Elasticsearch as you scale out, have a look at [this thread](https://discuss.elastic.co/t/aggregation-with-terms-and-cardinality-deliver-different-results/131155/2).

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