How to Add, Delete new Columns in Sequelize CLI

Question

I\'ve just started using Sequelize and Sequelize CLI

Since it\'s a development time, there are a frequent addition and deletion of columns. What the best the method

Answer 1

If you want to add multiple columns to the same table, wrap everything in a Promise.all() and put the columns you'd like to add within an array:

module.exports = {
  up: (queryInterface, Sequelize) => {
    return Promise.all([
      queryInterface.addColumn(
        'tableName',
        'columnName1',
        {
          type: Sequelize.STRING
        }
      ),
      queryInterface.addColumn(
        'tableName',
        'columnName2',
        {
          type: Sequelize.STRING
        }
      ),
    ]);
  },

  down: (queryInterface, Sequelize) => {
    return Promise.all([
      queryInterface.removeColumn('tableName', 'columnName1'),
      queryInterface.removeColumn('tableName', 'columnName2')
    ]);
  }
};

You can have any column type supported by sequelize https://sequelize.readthedocs.io/en/2.0/api/datatypes/