Elastic Search 按布尔字段排序

Question

我想按名为trust 的字段中的真实值对列表进行排序。

我发现排序选项不支持布尔排序。

我怎样才能实现这个目标？

Answer 1

如果我很好地理解你的问题，我尝试在 ES 7.8 版本上进行本地测试，并在索引中提取了以下数据：

"content": "这是一个测试", "trusted": true

"content": "这是一个新测试", "trusted": true

"content": "这不是测试", "trusted": false

这是索引的映射：

"mappings" : {
  "properties" : {
    "content" : {
      "type" : "text",
      "fields" : {
        "keyword" : {
          "type" : "keyword",
          "ignore_above" : 256
        }
      }
    },
    "trusted" : {
      "type" : "boolean"
    }
  }
}

这是以下情况下的查询"order" : "desc"：

{
  "sort": [
    {
      "trusted": {
        "order": "desc"
      }
    }
  ]
}

响应：

"hits" : [
  {
    "_index" : "boolean-sorting",
    "_type" : "_doc",
    "_id" : "B-YleHQBsTCl1BZvrFdA",
    "_score" : null,
    "_source" : {
      "content" : "This is a test",
      "trusted" : true
    },
    "sort" : [
      1
    ]
  },
  {
    "_index" : "boolean-sorting",
    "_type" : "_doc",
    "_id" : "CeYleHQBsTCl1BZvtFdJ",
    "_score" : null,
    "_source" : {
      "content" : "This is a new test",
      "trusted" : true
    },
    "sort" : [
      1
    ]
  },
  {
    "_index" : "boolean-sorting",
    "_type" : "_doc",
    "_id" : "DOYleHQBsTCl1BZvvVfl",
    "_score" : null,
    "_source" : {
      "content" : "This is not a test",
      "trusted" : false
    },
    "sort" : [
      0
    ]
  }
]

当 时"order":"asc"，响应为：

"hits" : [
  {
    "_index" : "boolean-sorting",
    "_type" : "_doc",
    "_id" : "DOYleHQBsTCl1BZvvVfl",
    "_score" : null,
    "_source" : {
      "content" : "This is not a test",
      "trusted" : false
    },
    "sort" : [
      0
    ]
  },
  {
    "_index" : "boolean-sorting",
    "_type" : "_doc",
    "_id" : "B-YleHQBsTCl1BZvrFdA",
    "_score" : null,
    "_source" : {
      "content" : "This is a test",
      "trusted" : true
    },
    "sort" : [
      1
    ]
  },
  {
    "_index" : "boolean-sorting",
    "_type" : "_doc",
    "_id" : "CeYleHQBsTCl1BZvtFdJ",
    "_score" : null,
    "_source" : {
      "content" : "This is a new test",
      "trusted" : true
    },
    "sort" : [
      1
    ]
  }
]

链接： https://www.elastic.co/guide/en/elasticsearch/reference/current/sort-search-results.html

如果我回答错误，请告诉我，我很乐意提供帮助。