actualizar array en el ejemplo de código de mongo doc

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Ejemplo 1: campo de actualización de mongodb dentro array

Consider the following documentin the students collection whose grades element value is an array of embedded documents:
  _id:4,
  grades:[ grade:80, mean:75, std:8, grade:85, mean:90, std:5, grade:85, mean:85, std:8]Use the positional $ operator to update the std field of the first array element that matches the grade equal to 85 condition:IMPORTANT---------You must include the array field as part of the query document.db.students.updateOne( _id:4,"grades.grade":85, $set:"grades.$.std":6)After the operation, the document has the following updated values:"_id":4,"grades":["grade":80,"mean":75,"std":8,"grade":85,"mean":90,"std":6,"grade":85,"mean":85,"std":8]

Ejemplo 2: cómo actualizar el subdocumento de datos array mongodb

// mongodb operation
db.getCollection('profilesservices').update(
  _id:ObjectId("6037ad8ac8f713f1d31abe38"),"workExperience._id":ObjectId("6037ad8ac8f713f1d31abe39"), $set:"workExperience.$.companyName":"bukalapak")//sample data}"profileId":"Sa4Dq9Xuw","photo":"https://res.cloudinary.com/coding-street-art/image/upload/v1614261651/yxnvpazindsvz6lfst3m.jpg","gender":"pria","birthDate":ISODate("1997-03-19T17:00:00.000Z"),"status":"mahasiswa","nationality":"indonesia","aboutMe":null,"resume":"https://res.cloudinary.com/coding-street-art/raw/upload/v1614261653/bemkbknvhzknxffmala2.doc","skills":["javascript","typescript","react","vuejs","express.js","nodejs"],"userId":"602e8f43c0e227e6cb80bc56","workExperience":["companyName":"bukalapak",//before value is bukopin"jobPosition":"data entry","startDate":ISODate("2015-02-14T17:00:00.000Z"),"endDate":ISODate("2017-07-27T17:00:00.000Z"),"workInformation":"","_id":ObjectId("6037ad8ac8f713f1d31abe39"),"companyName":"procar international finance","jobPosition":"general affair","startDate":ISODate("2015-02-14T17:00:00.000Z"),"endDate":ISODate("2017-07-27T17:00:00.000Z"),"workInformation":"","_id":ObjectId("507f1f77bcf86cd799439011")],"education":["institutionName":"unindra","educationDegree":"sarjana","fieldStudy":"tehnik informatika","startDate":ISODate("2015-03-24T17:00:00.000Z"),"endDate":ISODate("2020-03-24T17:00:00.000Z"),"educationInformation":"","_id":ObjectId("6037ad8ac8f713f1d31abe3a")],"appreciation":[],"volunteerExperience":[],"__v":0}

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