# Query with multiple has\_children clauses
**URL:** https://discuss.elastic.co/t/query-with-multiple-has-children-clauses/159987
**Category:** Elasticsearch
**Created:** [December 8, 2018, 12:03am UTC](https://discuss.elastic.co/t/query-with-multiple-has-children-clauses/159987 "2018-12-08T00:03:30Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Andrew\_Hackley](https://discuss.elastic.co/u/Andrew_Hackley)
#### Post date: [December 8, 2018, 12:03am UTC](https://discuss.elastic.co/t/query-with-multiple-has-children-clauses/159987/1 "2018-12-08T00:03:30Z")
I'd like to know if it's possible to have multiple has\_children clauses in one query. I've not been able to get it to work. Here's an example of what I'm trying:
```
GET test-index/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"field1": "value1"
}
},
{
"has_child": {
"type": "joinDocValue",
"query": {
"match": {
"field2": "value2"
}
}
}
},
{
"has_child": {
"type": "joinDocValue2",
"query": {
"match": {
"field3": "value3"
}
}
}
}
]
}
}
}
```
I saw this earlier topic: [Has\_child query with multiple type?](https://discuss.elastic.co/t/has-child-query-with-multiple-type/125165) where @jimczi mentioned you can have only one query per child type. It's not clear to me what exactly that means though.
The [has\_child documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-has-child-query.html) indicates that multiple has\_children clauses in one query should be possible (although slow compared to not using parent child mappings). Specifically the documentation mentions:
> Each has\_child query that gets added to a search request can increase query time significantly
So obviously putting multiple has\_child conditions together will significantly slow down the query... but it definitely sounds possible. I'd very much like to benchmark a few different mappings use cases which essentially require multi-has\_child conditions in one query. Can anyone help form the multi-has\_child query that the documentation indicates is possible?
Thank you!
---
### Author:  [@Andrew\_Hackley](https://discuss.elastic.co/u/Andrew_Hackley)
#### Post date: [December 10, 2018, 4:26pm UTC](https://discuss.elastic.co/t/query-with-multiple-has-children-clauses/159987/2 "2018-12-10T16:26:08Z")
On re-inspection this query does work as written above.... It was the document seeding that I was messing up. 😕
Well, if anyone needs assistance forming a multi-condition has\_child query, hopefully this post's query example will still be of help to you!
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [January 7, 2019, 4:26pm UTC](https://discuss.elastic.co/t/query-with-multiple-has-children-clauses/159987/3 "2019-01-07T16:26:16Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.