Query parent who just has only one child

Clay (Clay Hu) July 18, 2016, 4:06am 1

I have some document and every doc have some other related documents.

Now, I want to know which parent doc has only one child doc.

What should I do ?

Or is there any better way ?

Topic		Replies	Views
How to get all docs in a family? Elasticsearch	10	1232	July 6, 2017
How to query data with parent and child documents Elasticsearch	2	665	June 23, 2017
How to query parent with no children Elasticsearch	2	2060	November 4, 2022
Search for a parent or child Elasticsearch	1	326	October 30, 2019
Get child, of child, of child etc Elasticsearch	1	409	October 26, 2017