sql-server-samples/samples/tutorials/node.js/Windows/SqlServerSequelizeSample/orm.js

var Sequelize = require('sequelize');

var userName = 'sa';
var password = 'your_password'; // update me
var hostName = 'localhost';
var sampleDbName = 'SampleDB';

// Initialize Sequelize to connect to sample DB
var sampleDb = new Sequelize(sampleDbName, userName, password, {
    dialect: 'mssql',
    host: hostName,
    port: 1433, // Default port
    logging: false, // disable logging; default: console.log

    dialectOptions: {
        requestTimeout: 30000 // timeout = 30 seconds
    }
});

var Polygon = sampleDB.define(
    type: Sequelize.STRING,
    coordinates: Sequelize.GEOMETRY.ARRAY,
    geometry: Sequelize.ARRAY,
);

// Define the 'User' model
var User = sampleDb.define('user', {
    firstName: Sequelize.STRING,
    lastName: Sequelize.STRING
});

// Define the 'Task' model
var Task = sampleDb.define('task', {
    title: Sequelize.STRING,
    dueDate: Sequelize.DATE,
    isComplete: Sequelize.BOOLEAN
});

// Model a 1:Many relationship between User and Task
User.hasMany(Task);

console.log('**Node CRUD sample with Sequelize and MSSQL **');

// Tell Sequelize to DROP and CREATE tables and relationships in the database
sampleDb.sync({force: true})
.then(function() {
    console.log('\nCreated database schema from model.');

    // Create demo: Create a User instance and save it to the database
    User.create({firstName: 'Anna', lastName: 'Shrestinian'})
    .then(function(user) {
        console.log('\nCreated User:', user.get({ plain: true}));

        // Create demo: Create a Task instance and save it to the database
        Task.create({
            title: 'Ship Helsinki', dueDate: new Date(2017,04,01), isComplete: false
        })
        .then(function(task) {
            console.log('\nCreated Task:', task.get({ plain: true}));

            // Association demo: Assign task to user
            user.setTasks([task])
            .then(function() {
                console.log('\nAssigned task \''
            + task.title
            + '\' to user ' + user.firstName
            + ' ' + user.lastName);

                // Read demo: find incomplete tasks assigned to user 'Anna''
                User.findAll({
                    where: { firstName: 'Anna'},
                    include: [{
                        model: Task,
                        where: { isComplete: false }
                    }]
                })
                .then(function(users) {
                    console.log('\nIncomplete tasks assigned to Anna:\n',
                JSON.stringify(users));

                    // Update demo: change the 'dueDate' of a task
                    Task.findById(1).then(function(task) {
                        console.log('\nUpdating task:',
                task.title + ' ' + task.dueDate);
                        task.update({
                            dueDate: new Date(2016,06,30)
                        })
                        .then(function() {
                            console.log('dueDate changed:',
                    task.title + ' ' + task.dueDate);

                            // Delete demo: delete all tasks with a dueDate in 2016
                            console.log('\nDeleting all tasks with with a dueDate in 2016');
                            Task.destroy({
                                where: { dueDate: {$lte: new Date(2016,12,31)}}
                            })
                            .then(function() {
                                Task.findAll()
                                .then(function(tasks) {
                                    console.log('Tasks in database after delete:',
                        JSON.stringify(tasks));
                                    console.log('\nAll done!');
                                })
                            })
                        })
                    })
                })
            })
        })
    })
})