A Database Error Occurred

Error Number: 1054

Unknown column 'views' in 'field list'

select count(*)total,SUM(views)views,sum(comments)comments from(select b.* from t_blog b left join t_user u on b.uid=u.uid where b.uid=13)a

Filename: /www/wwwroot/yzfang/application/shared/helpers/db_helper.php

Line Number: 62