如何修复 ElasticSearch 'no [query] registered for [missing]'

问题：

你正在尝试运行类似这样的 ElasticSearch 查询

query-missing.json

{
    "query": {
        "missing" : { "field" : "myfield" }
    }
}

{
    "query": {
        "missing" : { "field" : "myfield" }
    }
}

查找没有 myfield 的文档。

但是你只看到类似这样的错误消息：

elasticsearch-error.txt

elasticsearch.exceptions.RequestError: RequestError(400, 'parsing_exception', 'no [query] registered for [missing]')

elasticsearch.exceptions.RequestError: RequestError(400, 'parsing_exception', 'no [query] registered for [missing]')

解决方案

正如 ElasticSearch 文档告诉我们的，没有 missing 查询！你需要改为在 must_not 子句中使用 exists 查询：

query-exists-mustnot.json

{
    "query": {
        "bool": {
            "must_not": {
                "exists": {
                    "field": "myfield"
                }
            }
        }
    }
}

{
    "query": {
        "bool": {
            "must_not": {
                "exists": {
                    "field": "myfield"
                }
            }
        }
    }
}

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