-- 报销明细发票：统一使用 receipt_file_ids，移除 receipt_file_id
-- 若已存在 receipt_file_id 列，先合并数据再删除

UPDATE `yz_backend_reimbursement_items`
SET `receipt_file_ids` = CAST(`receipt_file_id` AS CHAR)
WHERE (`receipt_file_ids` = '' OR `receipt_file_ids` IS NULL)
  AND `receipt_file_id` IS NOT NULL
  AND `receipt_file_id` > 0;

ALTER TABLE `yz_backend_reimbursement_items`
  DROP INDEX `idx_receipt_file_id`,
  DROP COLUMN `receipt_file_id`;