Database error in vBulletin 3.6.5:

Invalid SQL:
SELECT searchid FROM search AS search WHERE userid = 1 AND searchhash = 'ddf674a74ad7d13313c2d1b3094eb66e' AND orderedids = '412,123,416,323,415,56,409,414,349,45,358,248,247,410,356,237,407,310,234,21,364,236,43,44,46,60,186,52,273,334,411,365,189,200,54,5,362,321,403,161,249,408,371,406,383,397,405,404' AND announceids = '' AND completed = 1;

MySQL Error  : Unknown column 'completed' in 'where clause'
Error Number : 1054
Date         : Tuesday, May 1st 2007 @ 03:53:02 AM
Script       : http://www.site.com/forums/search-do_getdaily.html
Referrer     : http://www.site.com/forums/search-do_getnew.html
IP Address   : 183.254.13.90
Username     : hima85222
Classname    : forum_database

ALTER TABLE search ADD `completed` smallint(5) unsigned NOT NULL default '1';

Error
SQL query: 

ALTER TABLE search ADD `completed` smallint( 5 ) unsigned NOT NULL default '1' 

MySQL said:  

#1060 - Duplicate column name 'completed'