elasticsearch获取字段missing的数据

用head查询： demo如下

http://localhost:9200/sj_0505/lw_point_location/

_search    post

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