SELECT
	I.ITEM_CODE AS CODE,
	CASE WHEN IH.ITEM_NAME IS NULL THEN I.ITEM_NAME
	     WHEN IH.ITEM_NAME = I.ITEM_NAME THEN NULL
	     ELSE I.ITEM_NAME
	END AS NAME
FROM
	ITEM I
	LEFT JOIN ITEM_HISTORY IH
	ON I.ITEM_CODE = IH.ITEM_CODE
ORDER BY
	I.ITEM_CODE DESC