Use sql events:
UPDATE
`Object_DATA`
SET
`Object_DATA`.`CharacterID` = 0, `LastUpdated` = CURRENT_TIMESTAMP
WHERE
`Object_DATA`.`CharacterID` <> 0
AND `Object_DATA`.`CharacterID` <= 12500
AND `Object_DATA`.`Classname` NOT LIKE 'Tent%'
AND `Object_DATA`.`Classname` NOT LIKE '%Locked'
AND `Object_DATA`.`Classname` NOT LIKE '%M240Nest_DZ%'
AND `Object_DATA`.`Classname` NOT LIKE 'Land%'
AND `Object_DATA`.`Classname` NOT LIKE 'Map%'
AND `Object_DATA`.`Classname` NOT LIKE 'Target%'
AND `Object_DATA`.`Classname` NOT LIKE 'Cinder%'
AND `Object_DATA`.`Classname` NOT LIKE 'ASC%'
AND `Object_DATA`.`Classname` NOT LIKE 'Wood%'
AND `Object_DATA`.`Classname` NOT LIKE 'Metal%'
AND `Object_DATA`.`Classname` NOT LIKE '%Storage%'
AND `Object_DATA`.`Classname` NOT IN ('OutHouse_DZ', 'GunRack_DZ', 'WorkBench_DZ', 'Sandbag1_DZ', 'FireBarrel_DZ', 'DesertCamoNet_DZ', 'StickFence_DZ', 'LightPole_DZ', 'DeerStand_DZ', 'ForestLargeCamoNet_DZ', 'Plastic_Pole_EP1_DZ', 'Hedgehog_DZ', 'FuelPump_DZ', 'Fort_RazorWire', 'SandNest_DZ', 'ForestCamoNet_DZ', 'Fence_corrugated_DZ', 'CanvasHut_DZ', 'Generator_DZ', 'Info_Board_EP1', 'FlagCarrierRU', 'EntranceGate_EP1', 'T34')
AND `LastUpdated` < DATE_SUB(CURRENT_TIMESTAMP, INTERVAL 7 DAY) AND `Datestamp` < DATE_SUB(CURRENT_TIMESTAMP, INTERVAL 7 DAY)