More than 5 years have passed since last update.

Elasticsearchの複数タグをもつドキュメントがどのように検索できるか試してみる

Elasticsearch

Posted at 2016-09-01

senseで実行します。

indexの作成とデータの挿入

# Delete the `my_index` index
DELETE /my_index

# Create index
PUT /my_index

# Index example docs
PUT /my_index/my_type/1
{
  "tags": [
    "search"
  ],
  "tag_count": 1
}

PUT /my_index/my_type/2
{
  "tags": [
    "search",
    "open_source"
  ],
  "tag_count": 2
}

検索

searchというタグが含まれているものを検索

# クエリ
GET /my_index/my_type/_search
{
  "query": {
    "constant_score": {
      "filter": {
        "bool": {
          "must": [
            {
              "term": {
                "tags": "search"
              }
            }
          ]
        }
      }
    }
  }
}

# 結果
{
  "took": 8,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
  },
  "hits": {
    "total": 2,
    "max_score": 1,
    "hits": [
      {
        "_index": "my_index",
        "_type": "my_type",
        "_id": "2",
        "_score": 1,
        "_source": {
          "tags": [
            "search",
            "open_source"
          ],
          "tag_count": 2
        }
      },
      {
        "_index": "my_index",
        "_type": "my_type",
        "_id": "1",
        "_score": 1,
        "_source": {
          "tags": [
            "search"
          ],
          "tag_count": 1
        }
      }
    ]
  }
}

open_sourceという単語が含まれているものの結果は以下

# クエリ
GET /my_index/my_type/_search
{
  "query": {
    "constant_score": {
      "filter": {
        "bool": {
          "must": [
            {
              "term": {
                "tags": "open_source"
              }
            }
          ]
        }
      }
    }
  }
}

# 結果
{
  "took": 1,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
  },
  "hits": {
    "total": 1,
    "max_score": 1,
    "hits": [
      {
        "_index": "my_index",
        "_type": "my_type",
        "_id": "2",
        "_score": 1,
        "_source": {
          "tags": [
            "search",
            "open_source"
          ],
          "tag_count": 2
        }
      }
    ]
  }
}

参考

You get articles that match your needs
You can efficiently read back useful information
You can use dark theme

What you can do with signing up