alterCourseTable(); } protected function alterCourseTable() { $this->table('kg_course') ->addColumn('fake_user_count', 'integer', [ 'null' => false, 'default' => '0', 'limit' => MysqlAdapter::INT_REGULAR, 'signed' => false, 'comment' => '伪造用户数', 'after' => 'user_count', ])->save(); } }