A simple Elasticsearch query to return a parent document with a children for a specific user id

elasticsearch-simple-parent-child-query.json

{
  "index": "INDEX_NAME",
  "type": "PARENT_TYPE_NAME",
  "body": {
    "query": {
      "bool": {
        "must": [
          {
            "query_string": {
              "default_field": "title",
              "query": "SEARCH_QUERY"
            }
          },
          {
            "term": {
              "user_id": 1
            }
          }
        ],
        "should": [
          {
            "has_child": {
              "type": "CHILD_TYPE_NAME",
              "query": {
                "filtered": {
                  "query": {
                    "bool": {
                      "must": {
                        "term": {
                          "user_id": 1
                        }
                      }
                    }
                  }
                }
              },
              "inner_hits": {}
            }
          }
        ]
      }
    },
    "from": 0,
    "size": 200,
    "sort": {
      "title.sort": {
        "order": "desc"
      }
    }
  }
}