# Sum of distinct document fields

**URL:** <https://discuss.elastic.co/t/sum-of-distinct-document-fields/140944>\
**Category:** Elasticsearch\
**Created:** [July 20, 2018, 4:18pm UTC](https://discuss.elastic.co/t/sum-of-distinct-document-fields/140944 "2018-07-20T16:18:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Olexij\_Tkatchenko](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/olexij_tkatchenko/32/9958_2.png) [@Olexij\_Tkatchenko](https://discuss.elastic.co/u/Olexij_Tkatchenko)\
**Post date:** [July 20, 2018, 4:18pm UTC](https://discuss.elastic.co/t/sum-of-distinct-document-fields/140944/1 "2018-07-20T16:18:28Z")

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I have many documents with distinct field buildId (containing duplicates), common field buildType and a filed duration. How do I calculate a sum of durations for distinct documents in the sense of buildId with matching common field?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 17, 2018, 4:18pm UTC](https://discuss.elastic.co/t/sum-of-distinct-document-fields/140944/2 "2018-08-17T16:18:35Z")

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