Is it possible to return parent document with optional child?

Elastic Stack Elasticsearch
1

Hi guys!
I have company as a parent document and its relation status with other company (a child document with parent id as companyId):
company: {companyId, name, address, ...}
relation: {myCompanyId, otherCompanyId, status}
I am goint to find companies by some conditions and using has_child statement (to specify myCompanyId). But I don't want to the result depends on existing child documents. In other words I'd like something like LEFT OUTER JOIN in SQL.
Or a suitable solution is to return parent documents with no full childs but with childs which match some conditions
Is it possible?

2

Hi einfoman,
Can you provide your query (json encode formate ) for better solution.