-- Apply once to databases created before inbound/outbound display fields existed.
-- Existing documents receive a stable number derived from their primary key;
-- their operator and remark remain NULL because that historical data was never recorded.

ALTER TABLE inbound_orders
  ADD COLUMN inbound_no VARCHAR(32) NULL UNIQUE AFTER location_id,
  ADD COLUMN operator VARCHAR(100) NULL AFTER inbound_no,
  ADD COLUMN remark TEXT NULL AFTER supplier;

UPDATE inbound_orders
SET inbound_no = CONCAT('IN-', LPAD(id, 8, '0'))
WHERE inbound_no IS NULL;

ALTER TABLE outbound_orders
  ADD COLUMN outbound_no VARCHAR(32) NULL UNIQUE AFTER location_id,
  ADD COLUMN operator VARCHAR(100) NULL AFTER outbound_no,
  ADD COLUMN remark TEXT NULL AFTER receiver;

UPDATE outbound_orders
SET outbound_no = CONCAT('OUT-', LPAD(id, 8, '0'))
WHERE outbound_no IS NULL;