UPDATE



// //UPDATE
User.updateOne({ age: 21, name: "bruce" })
  .then((res) => {
    console.log(res);
  })
  .catch((err) => {
    console.log(err);
  });
User.updateMany({ age: { $gt: 20 } }, { age: 25 })
  .then((res) => {
    console.log(res);
  })
  .catch((err) => {
    console.log(err);
  });






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