如何修复 ElasticSearch '[match] query doesn't support multiple fields, found [...] and [...]'

问题：

你想运行类似这样的 ElasticSearch 查询

match-query-example.json

{
    "query": {
        "match" : {
            "one_field" : "one_value",
            "another_field": "another_value"
        }
    }
}

{
    "query": {
        "match" : {
            "one_field" : "one_value",
            "another_field": "another_value"
        }
    }
}

但你只看到类似这样的错误消息

elasticsearch-error.txt

elasticsearch.exceptions.RequestError: RequestError(400, 'parsing_exception', "[match] query doesn't support multiple fields, found [one_field] and [another_field]")

elasticsearch.exceptions.RequestError: RequestError(400, 'parsing_exception', "[match] query doesn't support multiple fields, found [one_field] and [another_field]")

解决方案

Match 查询仅支持一个字段。你应该使用包含多个 match 查询的 must 子句的 bool 查询：

bool-must-multi-match.json

{
    "query": {
        "bool": {
            "must": [
                {"match": {"one_field" : "one_value"}},
                {"match": {"another_field" : "another_value"}},
            ]
        }
    }
}

{
    "query": {
        "bool": {
            "must": [
                {"match": {"one_field" : "one_value"}},
                {"match": {"another_field" : "another_value"}},
            ]
        }
    }
}

另请参见MultiMatch 查询的官方文档。

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