Database error in vBulletin 3.8.2:

Invalid SQL:

SELECT thread.threadid, thread.forumid, thread.title, thread.prefixid, thread.taglist, postusername, postuserid,
thread.lastpost, thread.replycount,
forum.title AS forumtitle
,post.pagetext AS preview


FROM thread AS thread
INNER JOIN forum AS forum ON (forum.forumid = thread.forumid)
LEFT JOIN post AS post ON (post.postid = thread.firstpostid)



WHERE thread.threadid IN (8643) AND thread.visible = 1

AND thread.postuserid NOT IN (naas)

ORDER BY lastpost DESC;

MySQL Error : Unknown column 'naas' in 'where clause'
Error Number : 1054
Request Date : Wednesday, June 10th 2009 @ 05:36:15 PM
Error Date : Wednesday, June 10th 2009 @ 05:36:16 PM
Script : http://www.nayli.com/vb/showthread.php?t=9458
Referrer : http://www.nayli.com/vb/f110.html
IP Address : 41.221.16.87
Username : haouas
Classname : vB_Database
MySQL Version : 5.0.22