SELECT num seq, answer, name, id, sex, ip, date regdt, subject, refer, file1, file2, isSecret, isAdmin FROM counsel_nomal_bbs WHERE (num = num_r) ORDER BY num DESC LIMIT 0, 15∨derby=Error :

1064 : You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '15∨derby=' at line 8