ALTER TABLE `bills` CHANGE `workshop_Compensation_sole_1cm` `workshop_compensation_sole_1cm` INT(11) NOT NULL DEFAULT '0',
CHANGE `workshop_Compensation_sole_2cm` `workshop_compensation_sole_2cm` INT(11) NOT NULL DEFAULT '0',
CHANGE `workshop_Compensation_sole_3cm` `workshop_compensation_sole_3cm` INT(11) NOT NULL DEFAULT '0',
CHANGE `workshop_Compensation_sole_4cm` `workshop_compensation_sole_4cm` INT(11) NOT NULL DEFAULT '0',
CHANGE `workshop_Compensation_sole_5cm` `workshop_compensation_sole_5cm` INT(11) NOT NULL DEFAULT '0';

UPDATE bills
SET
  workshop_Compensation_sole_1cm = 0
WHERE
  workshop_Compensation_sole_1cm = -1;

UPDATE bills
SET
  workshop_Compensation_sole_2cm = 0
WHERE
  workshop_Compensation_sole_2cm = -1;

UPDATE bills
SET
  workshop_Compensation_sole_3cm = 0
WHERE
  workshop_Compensation_sole_3cm = -1;

UPDATE bills
SET
  workshop_Compensation_sole_4cm = 0
WHERE
  workshop_Compensation_sole_4cm = -1;

UPDATE bills
SET
  workshop_Compensation_sole_5cm = 0
WHERE
  workshop_Compensation_sole_5cm = -1;
