-- 已执行旧版 order_batch_job_tables.sql 的库：补 ConcurrencyStamp / PayloadJson / ResultJson
-- 若列已存在，对应 ALTER 会报错，跳过即可
-- 补列完成后执行 sql/migrate_t_order_batch_job_comments.sql 写入表/字段注释

ALTER TABLE `t_order_batch_job`
  ADD COLUMN `ConcurrencyStamp` CHAR(36) NOT NULL DEFAULT '' COMMENT '并发戳' AFTER `IsDeleted`;

UPDATE `t_order_batch_job`
  SET `ConcurrencyStamp` = UUID()
  WHERE `ConcurrencyStamp` = '';

ALTER TABLE `t_order_batch_job_item`
  ADD COLUMN `ConcurrencyStamp` CHAR(36) NOT NULL DEFAULT '' COMMENT '并发戳' AFTER `IsDeleted`;

UPDATE `t_order_batch_job_item`
  SET `ConcurrencyStamp` = UUID()
  WHERE `ConcurrencyStamp` = '';

ALTER TABLE `t_order_batch_job_item`
  ADD COLUMN `PayloadJson` TEXT NULL COMMENT '子项入参快照（JSON）' AFTER `FailReason`;

ALTER TABLE `t_order_batch_job_item`
  ADD COLUMN `ResultJson` TEXT NULL COMMENT '子项执行结果快照（JSON）' AFTER `PayloadJson`;