const { Sequelize, DataTypes } = require('sequelize'); const { sequelize } = require('./model'); const User = sequelize.define( 'User', { id: { type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true, unique: true }, firstName: { type: DataTypes.STRING, allowNull: false }, lastName: { type: DataTypes.STRING, allowNull: false }, }, { timestamps: false }, ); (async () => { try { await sequelize.authenticate(); console.log('Connection has been established successfully.'); // create table await sequelize.sync(); let users = await User.findAll({ attributes: ['firstName'] }); User.destroy({ truncate: true, cascade: true, force: true }); const user = await User.create({ firstName: 'John', lastName: 'Doe' }); users = await User.findAll(); // await sequelize.close(); } catch (error) { console.error('Unable to connect to the database:', error); } })();