# Elasticsearch function\_score with nested\_objects

**URL:** <https://discuss.elastic.co/t/elasticsearch-function-score-with-nested-objects/19137>\
**Category:** Elasticsearch\
**Created:** [August 7, 2014, 2:17pm UTC](https://discuss.elastic.co/t/elasticsearch-function-score-with-nested-objects/19137 "2014-08-07T14:17:03Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Fabian\_Kostring](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fabian_kostring/32/1310_2.png) [@Fabian\_Kostring](https://discuss.elastic.co/u/Fabian_Kostring)\
**Post date:** [August 7, 2014, 2:17pm UTC](https://discuss.elastic.co/t/elasticsearch-function-score-with-nested-objects/19137/1 "2014-08-07T14:17:03Z")

</div>

I have a problem with a query.I used a query for boosting documents with no  
nested\_objects. Now i use nested\_objects and changed the query to use a  
nested filter but nothing is boosted. I get the documents i expected but  
with no \_score changes.

Am i doing something wrong?

GET index/type/\_search  
{  
"query": {  
"function\_score": {  
"filter": {  
"bool": {  
"must": [  
{  
"term": {  
"parent.child": "test"  
}  
}  
]  
}  
},  
"functions": [  
{  
"boost\_factor": "100",  
"filter": {  
"nested": {  
"path": "parent",  
"filter": {  
"bool": {  
"must": [  
{  
"term": {  
"child": "test"  
}  
}  
]  
}  
}  
}  
}  
}  
],  
"score\_mode": "sum"  
}  
},  
"sort": "\_score",  
"from": 0,  
"size": 320  
}

Or is it because of

A nested filter behaves much like a nested query, except that it doesn’t

> > accept the score\_mode parameter. It can only be used in “filter context” —  
> > such as inside a filtered query — and it behaves like any other filter: it  
> > includes or excludes, but it doesn’t score.
> 
> > While the results of the nested filter itself are not cached, the usual  
> > caching rules apply to the filter inside the nested filter.

> **[Elasticsearch Platform — Find real-time answers at scale](https://www.elastic.co)**
>
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Thanks

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---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 1:10am UTC](https://discuss.elastic.co/t/elasticsearch-function-score-with-nested-objects/19137/2 "2017-07-06T01:10:09Z")

</div>