text: 
  exports.up = function(knex, Promise) {
    return knex.schema.createTable('random', random => {
      random.increments()
      random.integer('users_id')
          .unsigned()
          .notNullable()
          .references('id.username')
          .inTable('users')
      random.string('text', 550)
      .notNullable();
    })
  };
  
  exports.down = function(knex, Promise) {
    return knex.schema.dropTableIfExists('random');
  };
  