execute("ALTER table qimall_addons_course_activity add `logo` varchar(255) NOT NULL DEFAULT '' COMMENT '活动封面logo图片保存地址'"); } /** * {@inheritdoc} */ public function safeDown() { echo "M241230161220AlterAddonsCourseActivity cannot be reverted.\n"; return false; } /* // Use up()/down() to run migration code without a transaction. public function up() { } public function down() { echo "M240425023506UploadShippingInfo cannot be reverted.\n"; return false; } */ }