Parent Id Query | Elasticsearch Guide [6.6]

IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Parent Id Queryedit

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": {
    "_doc": {
      "properties": {
        "my_join_field": {
          "type": "join",
          "relations": {
            "my_parent": "my_child"
          }
        }
      }
    }
  }
}

PUT my_index/_doc/1?refresh
{
  "text": "This is a parent document",
  "my_join_field": "my_parent"
}

PUT my_index/_doc/2?routing=1&refresh
{
  "text": "This is a child document",
  "my_join_field": {
    "name": "my_child",
    "parent": "1"
  }
}

GET /my_index/_search
{
  "query": {
    "parent_id": {
      "type": "my_child",
      "id": "1"
    }
  }
}

Parametersedit

This query has two required parameters:

`type`	The child type name, as specified in the `join` field.
`id`	The ID of the parent document.
`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.

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