Mongoose批量更新操作

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

// 定义一个简单的模型
const UserSchema = new Schema({
  name: String,
  age: Number,
  active: Boolean
});

const User = mongoose.model('User', UserSchema);

// 连接到 MongoDB 数据库
mongoose.connect('mongodb://localhost:27017/test', { useNewUrlParser: true, useUnifiedTopology: true });

// 批量更新所有 active 为 false 的用户，将他们的 age 增加 1
User.updateMany({ active: false }, { $inc: { age: 1 } })
  .then(result => {
    console.log('批量更新成功:', result);
  })
  .catch(err => {
    console.error('批量更新失败:', err);
  });

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

// 定义一个简单的模型
const UserSchema = new Schema({
  name: String,
  age: Number,
  active: Boolean
});

const User = mongoose.model('User', UserSchema);

// 连接到 MongoDB 数据库
mongoose.connect('mongodb://localhost:27017/test', { useNewUrlParser: true, useUnifiedTopology: true });

// 批量更新和插入操作
const bulkOps = [
  { updateOne: { filter: { name: 'Alice' }, update: { $set: { age: 31 } } } },
  { insertOne: { document: { name: 'Bob', age: 25, active: true } } },
  { updateOne: { filter: { name: 'Charlie' }, update: { $set: { active: false } } } }
];

User.bulkWrite(bulkOps)
  .then(result => {
    console.log('批量操作成功:', result);
  })
  .catch(err => {
    console.error('批量操作失败:', err);
  });