SQL执行错误: <b>SELECT e.* FROM `Favorite` as f , `Question` as e 
            WHERE f.UserId= AND f.FavoriteId=e.QuestionId AND f.`Type`='1' AND f.Status=1 LIMIT 0,10</b><br /> 错误代码: <b>1064</b><br /> 错误信息: <b>You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND f.FavoriteId=e.QuestionId AND f.`Type`='1' AND f.Status=1 LIMIT 0,10' at line 2</b>