ALTER TABLE `t_samplestation`
  ADD COLUMN `T_SampleStationIsAdditionalFisik` CHAR(1) NOT NULL DEFAULT 'N' AFTER `T_SampleStationID`,
  ADD COLUMN `T_SampleStationOrder` INT(11) NOT NULL DEFAULT 0 AFTER `T_SampleStationIsAdditionalFisik`;

UPDATE `t_samplestation`
SET `T_SampleStationOrder` = `T_SampleStationID`
WHERE `T_SampleStationOrder` = 0;