SELECT b_seq,b_category,b_wbook,b_wname,b_company,b_oprice,b_discount,b_price,b_file,b_file2,b_file3 FROM HC_BOOK WHERE  SUBSTRING(b_category,4,2) = 'ED'  AND SUBSTRING(b_category,2,1) = 'B' AND b_show = 'Y' AND b_del = 'N'  AND SUBSTRING(b_category,3,1) = 'B'  AND b_wbook LIKE '%⺻%' ORDER BY b_seq DESC