# _type field 原文链接 : [https://www.elastic.co/guide/en/elasticsearch/reference/5.3/mapping-type-field.html](https://www.elastic.co/guide/en/elasticsearch/reference/5.3/mapping-type-field.html) 译文链接 : [http://www.apache.wiki/display/Elasticsearch/_type+field](http://www.apache.wiki/display/Elasticsearch/_type+field) 贡献者 : [朱彦安](/display/~zhuyanan)，[ApacheCN](/display/~apachecn)，[Apache中文网](/display/~apachechina) 每个索引的文档都与一个 **[_type](https://www.elastic.co/guide/en/elasticsearch/reference/5.3/mapping-type-field.html)**（请参阅 “**[Mapping Types](https://www.elastic.co/guide/en/elasticsearch/reference/5.3/mapping.html#mapping-type)[edit](https://github.com/elastic/elasticsearch/edit/5.3/docs/reference/mapping.asciidoc)**” 一节）以及一个 **[_id](https://www.elastic.co/guide/en/elasticsearch/reference/5.3/mapping-id-field.html) **相关联。 为了使类型名称快速搜索，**[_type](https://www.elastic.co/guide/en/elasticsearch/reference/5.3/mapping-type-field.html) **字段被索引。 该 **_type**字段的值可以在查询，聚合，脚本以及排序时访问： ``` # Example documents curl -XPUT 'localhost:9200/my_index/type_1/1?pretty' -H 'Content-Type: application/json' -d' { "text": "Document with type 1" } ' curl -XPUT 'localhost:9200/my_index/type_2/2?refresh=true&pretty' -H 'Content-Type: application/json' -d' { "text": "Document with type 2" } ' curl -XGET 'localhost:9200/my_index/_search?pretty' -H 'Content-Type: application/json' -d' { "query": { "terms": { "_type": [ "type_1", "type_2" ] # 1 } }, "aggs": { "types": { "terms": { "field": "_type", # 2 "size": 10 } } }, "sort": [ { "_type": { # 3 "order": "desc" } } ], "script_fields": { "type": { "script": { "lang": "painless", "inline": "doc['_type']" # 4 } } } } ' ``` | 1 | 在 **_type** 字段上查询 | | 2 | 在 **_type** 字段上聚合 | | 3 | 在 **_type** 字段上排序 | | 4 | 在脚本中访问 **_type** 字段 |