shanxia2.0/backend/scripts/migrate_20260727_pl_plan_create_date.sql

-- backend/scripts/migrate_20260727_pl_plan_create_date.sql
-- 运输计划：业务创建日期 create_date（与系统 create_time 独立）

ALTER TABLE `pl_plan`
  ADD COLUMN `create_date` date DEFAULT NULL COMMENT '创建日期' AFTER `plan_no`;

UPDATE `pl_plan`
SET `create_date` = DATE(`create_time`)
WHERE `create_date` IS NULL AND `create_time` IS NOT NULL;

UPDATE `pl_plan`
SET `create_date` = CURDATE()
WHERE `create_date` IS NULL;

ALTER TABLE `pl_plan`
  MODIFY COLUMN `create_date` date NOT NULL COMMENT '创建日期';