MongoDB在多个子文档中搜索多个字段

我的MongoDB数据结构如下所示：

    {
        "id": "7118592",
        "passages": [
             {
                 "infons": {
                     "article-id_pmid": "32292259",
                     "title": "Keywords",
                     "type": "front",
                     "section_type": "TITLE"
                  },
                  "text": "Understanding of guidance for acupuncture and moxibustion interventions on COVID-19 (Second edition) issued by CAAM"
             },
             {
                 "infons": {
                     "section_type": "ABSTRACT",
                     "type": "abstract",
                     "section": "Abstract"
                 },
                 "offset": 116,
                 "text": "At present, the situation of global fight against COVID-19 is serious. WHO (World Health Organization)-China Joint Mission fully confirms the success of \"China's model\" against COVID-19 in the report. In fact, one particular power in \"China's model\" is acupuncture and moxibustion of traditional Chinese medicine. To better apply \"non-pharmaceutic measures\":the external technique of traditional Chinese medicine, in the article, the main content of Guidance for acupuncture and moxibustion interventions on COVID-19 (Second edition) issued by China Association of Acupuncture-Moxibution is introduced and the discussion is stressed on the selection of moxibustion device and the duration of its exertion."
             }
         ]
    }

我想请求同一子文档中的

article-id\u pmid

和

text

，以及子文档的

text

，该子文档在

infons

中包含一个带有

节类型：ABSTRACT

和

类型：ABSTRACT

的字段
我尝试过这个请求，但结果不是我要搜索的：

db.mydata.find({$and:[{"passages.infons.article-id_pmid$":{$exists: true}},{"passages.infons.section_type":"ABSTRACT"},{"passages.infons.type":"abstract"}]},{"passages.infons.article-id_pmid.$":1,_id:0, "passages.text":1})

---

每个顶级条件都是独立处理的

---

用于在同一数组元素上指定多个条件。

passeges

是一个数组，因此执行

通道。infons…

将不起作用。

passions

数组中是否总是只有2个元素？意思是说它里面总是只有2个子文档吗？不，

passions

在同一时间可以有2个以上的元素，并且不是所有的

infons

都包含

article-id\u-pmid

，这就是为什么我试图过滤它们

db.mydata.find（{$and:[{“passions”：{$elemMatch:{“infons.article-id_pmid”：{“$exists”：true}}}}，{“passions”：{“$elemMatch”：{“infons.section_type”：“ABSTRACT”，“infons.type”：“ABSTRACT”}}}，{“passions.infons.article-id_pmid”：1}）

谢谢，我已经试过了，但是新的问题是如何只显示

article-id\u pmid

和另一个子文档

infons

的文本，类型为

abstract

！！！