ALTER TABLE `item_db` MODIFY COLUMN `equip_jobs` bigint(20) unsigned DEFAULT NULL;

ALTER TABLE `item_db_re` MODIFY COLUMN `equip_jobs` bigint(20) unsigned DEFAULT NULL;

ALTER TABLE `item_db2` MODIFY COLUMN `equip_jobs` bigint(20) unsigned DEFAULT NULL;

ALTER TABLE `item_db2_re` MODIFY COLUMN `equip_jobs` bigint(20) unsigned DEFAULT NULL;