ALTER TABLE `cart_inventory` MODIFY COLUMN `card0` SMALLINT(11) NOT NULL DEFAULT '0';
ALTER TABLE `cart_inventory` MODIFY COLUMN `card1` SMALLINT(11) NOT NULL DEFAULT '0';
ALTER TABLE `cart_inventory` MODIFY COLUMN `card2` SMALLINT(11) NOT NULL DEFAULT '0';
ALTER TABLE `cart_inventory` MODIFY COLUMN `card3` SMALLINT(11) NOT NULL DEFAULT '0';