如何在Sequelize中使用JOIN LEFT？

const Sequelize = require('sequelize');
const { Model, DataTypes } = Sequelize;

// 引入相关的模型
const User = require('./models/User');
const Order = require('./models/Order');

const sequelize = new Sequelize('database', 'username', 'password', {
  host: 'localhost',
  dialect: 'mysql',
});

User.hasMany(Order, { foreignKey: 'userId' });
Order.belongsTo(User, { foreignKey: 'userId' });

User.findAll({
  include: [
    {
      model: Order,
      required: false, // 设置为false表示使用LEFT JOIN
    },
  ],
})
  .then((users) => {
    console.log(users);
  })
  .catch((error) => {
    console.error(error);
  });