# Parent/Child with one to many?
**URL:** https://discuss.elastic.co/t/parent-child-with-one-to-many/4312
**Category:** Elasticsearch
**Created:** [April 28, 2011, 7:53pm UTC](https://discuss.elastic.co/t/parent-child-with-one-to-many/4312 "2011-04-28T19:53:15Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@James\_K](https://discuss.elastic.co/u/James_K)
#### Post date: [April 28, 2011, 7:53pm UTC](https://discuss.elastic.co/t/parent-child-with-one-to-many/4312/1 "2011-04-28T19:53:15Z")
Hello all, I'm trying to understand whether the parent child
functionality in elastic search will suit my needs or if I'm barking
up the wrong tree.
I have an index on forum posts with the body, user\_id of the author.
I'd like to create an index on users (with age, gender etc) so that i
can search for posts containing a keyword that were created by a user
of a certain age.
At a high level, I'd like to do a search on posts with a has\_child
query on a related user object. The problem here is that the user
would need many parents, do this doesn't seem to fit the model.
Anyone have any ideas on this?
thanks
-James
---
### Author:  [@kimchy](https://discuss.elastic.co/u/kimchy)
#### Post date: [April 29, 2011, 8:49pm UTC](https://discuss.elastic.co/t/parent-child-with-one-to-many/4312/2 "2011-04-29T20:49:44Z")
Yea, it does not seem to fit the model. You should denoarmalize the posts and add the relevant user data to it.
On Thursday, April 28, 2011 at 10:53 PM, James K wrote:
> Hello all, I'm trying to understand whether the parent child
> functionality in Elasticsearch will suit my needs or if I'm barking
> up the wrong tree.
>
> I have an index on forum posts with the body, user\_id of the author.
> I'd like to create an index on users (with age, gender etc) so that i
> can search for posts containing a keyword that were created by a user
> of a certain age.
>
> At a high level, I'd like to do a search on posts with a has\_child
> query on a related user object. The problem here is that the user
> would need many parents, do this doesn't seem to fit the model.
>
> Anyone have any ideas on this?
>
> thanks
>
> -James
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 4:07am UTC](https://discuss.elastic.co/t/parent-child-with-one-to-many/4312/3 "2017-07-06T04:07:22Z")