MySQL Server Error Report:Array ( [0] => Array ( [message] => MySQL Query Error: ) [1] => Array ( [sql] => select id, title, create_time,flag,intro,files,copyright from `tfb_com`.`trade_article` where cat_id=2226 and state >0 order by id desc,shownum desc limit 0, 8 ) [2] => Array ( [error] => Unknown column 'intro' in 'field list' ) [3] => Array ( [errno] => 1054 ) )