s1moe2

// NOTE: MySQL does not support transactional DDL (https://dev.mysql.com/doc/internals/en/transactions-notes-on-ddl-and-normal-transaction.html)
// You should use this with a (cool) DBMS such as PostgreSQL.

module.exports = {
    up: (queryInterface, Sequelize) => {
        return queryInterface.sequelize.transaction((t) => {
            return Promise.all([
                queryInterface.addColumn('table_name', 'column_name1', {
                    type: Sequelize.STRING
                }, { transaction: t }),

erdem

[
    {
        "timezones": [
            "America/Aruba"
        ], 
        "latlng": [
            12.5, 
            -69.96666666
        ], 
        "name": "Aruba", 

jeonghwan-kim

module.exports = {
  up: function (queryInterface, Sequelize) {
    return [
      queryInterface.addColumn('User', 'name', {
        type: Sequelize.STRING
      }),
      queryInterface.addColumn('User', 'nickname', {
        type: Sequelize.STRING,
      })
    ];

keeguon

[ 
  {name: 'Afghanistan', code: 'AF'}, 
  {name: 'Åland Islands', code: 'AX'}, 
  {name: 'Albania', code: 'AL'}, 
  {name: 'Algeria', code: 'DZ'}, 
  {name: 'American Samoa', code: 'AS'}, 
  {name: 'AndorrA', code: 'AD'}, 
  {name: 'Angola', code: 'AO'}, 
  {name: 'Anguilla', code: 'AI'}, 
  {name: 'Antarctica', code: 'AQ'},