'use strict' module.exports = { up: (queryInterface, Sequelize) => { return queryInterface.createTable('group_x_group', { parentId: { primaryKey: true, allowNull: false, type: Sequelize.INTEGER, onDelete: 'cascade', references: { model: 'groups', key: 'id' } }, childId: { primaryKey: true, allowNull: false, type: Sequelize.INTEGER, onDelete: 'cascade', references: { model: 'groups', key: 'id' } } }) }, down: (queryInterface, Sequelize) => { return queryInterface.dropTable('group_x_group') } }