如何 mongodb 搜索嵌套文档并找到完全匹配的字段

Question

records of collections

i have used the below code to find but it showing all the accounts data

db.getCollection('leads').find({"accounts.status":"suspended"})

after search query the result

i want to search where accounts.status=suspended but the result should show match nested documents under accounts

Answer 1

use $set with $filter after $match

db.collection.aggregate([
  {
    "$match": {
      "accounts.status": "suspended"
    }
  },
  {
    "$set": {
      "accounts": {
        "$filter": {
          "input": "$accounts",
          "as": "a",
          "cond": {
            $eq: [
              "$$a.status",
              "suspended"
            ]
          }
        }
      }
    }
  }
])

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