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elasticSearch多索引搜索（不限索引搜索）

发布时间：2021-08-31 22:31:54编辑：雪饮阅读（）

 在elasticSearch中多索引搜索，你当然可以理解为指定多个索引进行搜索，但是这里主要是指不限制索引进行搜索。

一个请求：
Get http://localhost:9200/_search?q=name:Central
请求正文：none
响应体：
{
    "took": 253,
    "timed_out": false,
    "_shards": {
        "total": 4,
        "successful": 4,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": {
            "value": 3,
            "relation": "eq"
        },
        "max_score": 0.72615415,
        "hits": [
            {
                "_index": "schools",
                "_type": "school",
                "_id": "1",
                "_score": 0.72615415,
                "_source": {
                    "name": "Central School4",
                    "description": "CBSE Affiliation",
                    "street": "Nagan",
                    "city": "paprola",
                    "state": "HP",
                    "zip": "176115",
                    "location": [
                        31.8955385,
                        76.8380405
                    ],
                    "fees": 2004,
                    "tags": [
                        "Senior Secondary",
                        "beautiful campus"
                    ],
                    "rating": "3.5"
                }
            },
            {
                "_index": "my-index-000010",
                "_type": "doc",
                "_id": "question1",
                "_score": 0.18232156,
                "_source": {
                    "name": "Central School1",
                    "description": "CBSE Affiliation",
                    "street": "Nagan",
                    "city": "paprola",
                    "state": "HP",
                    "zip": "176115",
                    "location": [
                        31.8955385,
                        76.8380405
                    ],
                    "fees": 2200,
                    "tags": [
                        "Senior Secondary",
                        "beautiful campus"
                    ],
                    "rating": "3.3",
                    "my_join_field": {
                        "name": "question"
                    }
                }
            },
            {
                "_index": "my-index-000010",
                "_type": "doc",
                "_id": "answer1",
                "_score": 0.18232156,
                "_routing": "question1",
                "_source": {
                    "comment": "I am learning ELK",
                    "username": "Jack",
                    "name": "Central School",
                    "my_join_field": {
                        "name": "answer",
                        "parent": "question1"
                    }
                }
            }
        ]
    }
}
没有看错，这里的响应结果是来自于多个索引的文档，这里只匹配了name为Central的文档，不管这些文档都是来自哪些索引。