SELECT
	T1.ITEM_CODE AS CODE
,	CASE 
		WHEN T2.ITEM_NAME IS NULL THEN T1.ITEM_NAME
		WHEN T1.ITEM_NAME <> T2.ITEM_NAME THEN T1.ITEM_NAME 
		ELSE NULL 
	END AS NAME
FROM
	ITEM AS T1
		LEFT OUTER JOIN ITEM_HISTORY AS T2
			ON T2.ITEM_CODE = T1.ITEM_CODE
ORDER BY
	T1.ITEM_CODE DESC