1054:Unknown column 'class3' in 'where clause' [ SQL语句 ] : SELECT itemid,title,thumb,path_classa,path_classb,zhcn FROM shumatt_chanpin_1 WHERE class3='' order by itemid desc

FILE: /data/www/wwwroot/shumatt.net/ThinkPHP/Library/Think/Db/Driver.class.php 　LINE: 350

#0 /data/www/wwwroot/shumatt.net/ThinkPHP/Library/Think/Db/Driver.class.php(350): E('1054:Unknown co...')
#1 /data/www/wwwroot/shumatt.net/ThinkPHP/Library/Think/Db/Driver.class.php(180): Think\Db\Driver->error()
#2 /data/www/wwwroot/shumatt.net/ThinkPHP/Library/Think/Model.class.php(1382): Think\Db\Driver->query('SELECT itemid,t...')
#3 /data/www/wwwroot/shumatt.net/Component/Pige.class.php(158): Think\Model->query('SELECT itemid,t...')
#4 /data/www/wwwroot/shumatt.net/Home/Controller/IndexController.class.php(1029): Component\Pige->Product(Object(Think\Model), 10, NULL, '1112', 'cn', 'shumatt_chanpin...', 'title', 'itemid', 'thumb', 'itemid,title,th...')
#5 [internal function]: Home\Controller\IndexController->Product()
#6 /data/www/wwwroot/shumatt.net/ThinkPHP/Library/Think/App.class.php(173): ReflectionMethod->invoke(Object(Home\Controller\IndexController))
#7 /data/www/wwwroot/shumatt.net/ThinkPHP/Library/Think/App.class.php(110): Think\App::invokeAction(Object(Home\Controller\IndexController), 'Product')
#8 /data/www/wwwroot/shumatt.net/ThinkPHP/Library/Think/App.class.php(204): Think\App::exec()
#9 /data/www/wwwroot/shumatt.net/ThinkPHP/Library/Think/Think.class.php(120): Think\App::run()
#10 /data/www/wwwroot/shumatt.net/ThinkPHP/ThinkPHP.php(97): Think\Think::start()
#11 /data/www/wwwroot/shumatt.net/index.php(83): include('/data/www/wwwro...')
#12 {main}