Parent Id Queryedit

Note

Added in 5.0.0.

The parent_id query can be used to find child documents which belong to a particular parent. Given the following mapping definition:

PUT /my_index
{
    "mappings": {
        "blog_post": {
            "properties": {
                "name": {
                    "type": "keyword"
                }
            }
        },
        "blog_tag": {
            "_parent": {
                "type": "blog_post"
            },
            "_routing": {
                "required": true
            }
        }
    }
}
GET /my_index/_search
{
    "query": {
        "parent_id" : {
            "type" : "blog_tag",
            "id" : "1"
        }
    }
}

The above is functionally equivalent to using the following has_parent query, but performs better as it does not need to do a join:

GET /my_index/_search
{
  "query": {
    "has_parent": {
      "parent_type": "blog_post",
        "query": {
          "term": {
            "_id": "1"
        }
      }
    }
  }
}

Parametersedit

This query has two required parameters:

type

The child type. This must be a type with _parent field.

id

The required parent id select documents must referrer to.

ignore_unmapped

When set to true this will ignore an unmapped type and will not match any documents for this query. This can be useful when querying multiple indexes which might have different mappings. When set to false (the default value) the query will throw an exception if the type is not mapped.