如何通过别名_id请求单个文档?

时间:2015-03-12 11:45:01

标签: elasticsearch

是否可以通过查询别名来通过其id请求单个文档,前提是别名中所有索引的所有键都是唯一的(它是外部保证)?

4 个答案:

答案 0 :(得分:8)

是的,查询跨越多个索引的别名与查询一个indice的方式相同。

只需对别名执行此查询:

POST my_alias_name/_search
{
    "filter":{
        "term":{"_id": "AUwNrOZsm6BwwrmnodbW"}
    }
}

编辑:GET操作不是真正的搜索,不能跨越多个索引的别名。因此,以下查询实际上是不允许的:

GET my_alias_name/my_type/AUwNrOZsm6BwwrmnodbW

答案 1 :(得分:7)

从Elasticsearch 5.1查询看起来像:

GET /my_alias_name/_search/
{
    "query": { 
        "bool": {
         "filter": {
                "term": {
                   "_id": "AUwNrOZsm6BwwrmnodbW"
                }
            }
        }
    }
}

答案 2 :(得分:0)

7.2 version Docs建议:

GET /_search
{
    "query": {
        "ids" : {
            "values" : ["1", "4", "100"]
        }
    }
}

响应应如下所示:

{
  "took": 0,
  "timed_out": false,
  "_shards": {
    "total": 2,
    "successful": 2,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": {
      "value": 1,
      "relation": "eq"
    },
    "max_score": 1.0,
    "hits": [
      {
        "_index": "indexwhatever",
        "_type": "_doc",
        "_id": "anyID",
        "_score": 1.0,
        "_source": {
          "field1": "value1",
          "field2": "value2"
        }
      }
    ]
  }
}

答案 3 :(得分:0)

如果您要查找带有一些带有curl的内部ID的文档:

curl -X GET 'localhost:9200/_search?q=id:42&pretty'