MongoDB如何检查数组中的所有ObjectIds是否都存在于数据库中？

db.collection.aggregate([
  {
    $match: {
      _id: ObjectId("collection_id") // 替换为集合的ObjectId
    }
  },
  {
    $unwind: "$arrayField" // 替换为包含要检查的数组的字段名
  },
  {
    $lookup: {
      from: "collection", // 替换为要查询的集合名
      localField: "arrayField",
      foreignField: "_id",
      as: "matchedDocs"
    }
  },
  {
    $match: {
      matchedDocs: { $size: 0 } // 检查是否有匹配的文档
    }
  },
  {
    $group: {
      _id: "$_id",
      missingIds: { $push: "$arrayField" } // 获取缺失的ObjectIds
    }
  }
])