问如何在节点js中使用sequalize.literal IF语句

EN

let {
        Sequelize,
        DataTypes,
    } = require('sequelize')

async function run () {
    let sequelize = new Sequelize(process.env.DB_NAME, process.env.DB_USER, process.env.DB_PASSWORD, {
            host:       'localhost',
            dialect:    'mysql',
            logging:    console.log
        })

    let Comment = sequelize.define('comment', {
            userId: DataTypes.INTEGER,
            comment: DataTypes.STRING
        })

    await sequelize.sync({ force: true })

    await Comment.bulkCreate([{
            comment: 'Hello'
        }, {
            userId: 42,
            comment: 'This is it.'
        }, {
            userId: 128,
            comment: 'Breakfast of the day.'
        }])
    
    let comments = await Comment.findAll({
            attributes: [
                'id',
                'comment',
                [ sequelize.literal('(case when userId is not null then "yes" else "no" end)'), 'status' ]
            ]
        })

    console.log(JSON.stringify(comments, null, 2))

    await sequelize.close()
}

run()

[
  {
    "id": 1,
    "comment": "Hello",
    "status": "no"
  },
  {
    "id": 2,
    "comment": "This is it.",
    "status": "yes"
  },
  {
    "id": 3,
    "comment": "Breakfast of the day.",
    "status": "yes"
  }
]