Mongodb：查找嵌套数组值答案

【问题标题】：Mongo DB: Find nested array valueMongodb：查找嵌套数组值
【发布时间】：2021-02-05 05:49:03
【问题描述】：

我正在使用 node.js 并尝试在与匹配“sale”相同的文档中查找包含匹配“productId”的数组。我在 mongo 文档中没有找到太多关于此的内容。

{"_id":
    {"$oid":"601baf0e5c307422c0fa958c"},
    "sale":"Test Sale",
    "products":[
      [
        ["productId","value1","value2"],
        ["productId","value1","value2"]
      ],
      [
        ["productId","value1","value2"],
        ["productId","value1","value2"]
      ],
      [
        ["productId","value1","value2"],
        ["productId","value1","value2"]
      ]
    ],
    "collectionProducts":["id","id","id"]
}

【问题讨论】：

标签： node.js mongodb mongodb-query

【解决方案1】：

playground

db.collection.find({
  "sale": "Test Sale",
  products: {
    "$elemMatch": {//As you have nested arrays
      "$elemMatch": {
        "$elemMatch": {
          "$in": [
            "abc"
          ]
        }
      }
    }
  }
})

最好有更好的架构。

【讨论】：