DELETE FROM ITEM
WHERE
 ITEM.ITEM_CODE IN 
 (SELECT ITEM.ITEM_CODE FROM ITEM
LEFT OUTER JOIN STOCK
ON ITEM.ITEM_CODE = STOCK.ITEM_CODE
AND STOCK_MANAGEMENT_TYPE = 1
AND (STOCK.ITEM_CODE IS NULL
OR LAST_DELIVERY_DATE <= date('2023-06-01','-6 month')
AND ACTUAL_AMT = 0)
)