module.exports = { up: function (queryInterface, Sequelize) { queryInterface.changeColumn( 'users', 'email', { type: Sequelize.STRING, unique: true, allowNull: false, } ); queryInterface.changeColumn( 'users', 'username', { type: Sequelize.STRING, unique: true, allowNull: false, } ); }, down: function (queryInterface, Sequelize) { queryInterface.changeColumn( 'users', 'email', { type: Sequelize.STRING, unique: false, allowNull: true, } ); queryInterface.changeColumn( 'users', 'username', { type: Sequelize.STRING, unique: false, allowNull: true, } ); }, };