# Date\_histogram on an array

**URL:** <https://discuss.elastic.co/t/date-histogram-on-an-array/44300>\
**Category:** Elasticsearch\
**Created:** [March 14, 2016, 10:36am UTC](https://discuss.elastic.co/t/date-histogram-on-an-array/44300 "2016-03-14T10:36:10Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![patou](https://avatars.discourse-cdn.com/v4/letter/p/f475e1/32.png) [@patou](https://discuss.elastic.co/u/patou)\
**Post date:** [March 14, 2016, 10:36am UTC](https://discuss.elastic.co/t/date-histogram-on-an-array/44300/1 "2016-03-14T10:36:10Z")

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hi

my problem :  
I have a field of type array of date :

"creneau": ["2015-09-08T09:00:00", "2015-09-08T09:15:00", "2015-09-08T10:30:00", "2015-09-08T10:45:00"]

"creneau": { "format": "strict\_date\_optional\_time||epoch\_millis", "type": "date" }

I make an aggrégation with an interval of 15 minutes:

"date\_histogram" : {  
"field" : "creneau",  
"interval" : "15m",

In this example, the field " creneau " match only once and not 4 times.  
I make an error?  
do you have a solution?

cdt  
patrick

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [March 15, 2016, 3:04am UTC](https://discuss.elastic.co/t/date-histogram-on-an-array/44300/2 "2016-03-15T03:04:03Z")

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You cannot work around this, how can it split one document 4 times like this?

What are you trying to solve here, there may be a better way to do it.

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**Author:** ![patou](https://avatars.discourse-cdn.com/v4/letter/p/f475e1/32.png) [@patou](https://discuss.elastic.co/u/patou)\
**Post date:** [March 15, 2016, 9:49am UTC](https://discuss.elastic.co/t/date-histogram-on-an-array/44300/3 "2016-03-15T09:49:37Z")

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ok, thx

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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:** [July 5, 2017, 11:08pm UTC](https://discuss.elastic.co/t/date-histogram-on-an-array/44300/4 "2017-07-05T23:08:23Z")

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