JAVASCRIPT

sequelize update column type

module.exports = {
    up: (queryInterface, Sequelize) => {
        return Promise.all([
            queryInterface.changeColumn('your table name ', 'name', {
                type: Sequelize.TEXT,
                allowNull: true,
            }, {
                transaction,
            })
        ])
    },

    down: (queryInterface, Sequelize) => {
        return Promise.all([
            queryInterface.changeColumn('your table name ', 'name', {
                type: Sequelize.STRING,
                allowNull: true,
            }, {
                transaction,
            })
        ])
    }
};

sequelize change column

queryInterface.changeColumn('Person', 'foo', {
  type: DataTypes.FLOAT,
  defaultValue: 3.14,
  allowNull: false
});