sqxp/docs/sql/migration_20260413_biz_delivery_task_dispatch_remark.sql

-- 配送任务：运营分配时的配送说明（展示在运营端订单「配送信息」）
ALTER TABLE `biz_delivery_task`
  ADD COLUMN `dispatch_remark` varchar(500) DEFAULT NULL COMMENT '运营分配配送备注' AFTER `effective_time`;

ALTER TABLE `biz_delivery_task_his`
  ADD COLUMN `dispatch_remark` varchar(500) DEFAULT NULL COMMENT '运营分配配送备注' AFTER `effective_time`;