Why using parent/child relationship instead of a simple parent_id relation?

Elastic Stack Elasticsearch
1

I am asking myself why i would use a parent/child relationship to retrieve
childs docs instead of creating a parent_id field in childs documents and
query on this field?

thank you

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2

Because you can execute queries against the parents and have the children
of the matching documents returned or vice versa. It is much more powerful
than simple filtering of a field.

On Tue, Jun 4, 2013 at 9:50 AM, Mathieu Roy mr.math.roy@gmail.com wrote:

I am asking myself why i would use a parent/child relationship to retrieve
childs docs instead of creating a parent_id field in childs documents and
query on this field?

thank you

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3

ah ok, i understand better now.

Thank you

Le mardi 4 juin 2013 12:57:58 UTC-4, Matt Weber a écrit :

Because you can execute queries against the parents and have the children
of the matching documents returned or vice versa. It is much more powerful
than simple filtering of a field.

On Tue, Jun 4, 2013 at 9:50 AM, Mathieu Roy <mr.ma...@gmail.com<javascript:>

wrote:

I am asking myself why i would use a parent/child relationship to
retrieve childs docs instead of creating a parent_id field in childs
documents and query on this field?

thank you

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