Query help

[pando]

SELECT 
	SUBSTR(TO_CHAR(TRUNC(d.DOWNLOADDATE,'MM')),4,6),
	COUNT(*) FROM DOWNLOAD d,
	SUM(DECODE(FEEDBACK, 'Y', 1, 'N', 0)) FEED_BACK_Y,
	SUM(DECODE(FEEDBACK, 'Y', 0, 'N', 1)) FEED_BACK_N
WHERE d.DOWNLOADDATE BETWEEN TO_DATE('07/01/2005','mm/dd/yyyy') AND TO_DATE(TO_CHAR(SYSDATE,'mm/dd/yyyy'),'mm/dd/yyyy')
GROUP BY TRUNC(d.DOWNLOADDATE,'MM')
ORDER BY TRUNC(d.DOWNLOADDATE,'MM')