A Database Error Occurred

Error Number: 1064

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 '`NULL` AND `create_time` < `IS` `NULL` AND `news_id` <> '84' AND `syscolumn_id` ' at line 3

SELECT * FROM `tbl_news` WHERE `position` > `IS` `NULL` AND `create_time` < `IS` `NULL` AND `news_id` <> '84' AND `syscolumn_id` IN('51') ORDER BY `position` asc, `create_time` desc

Filename: /home/wwwroot/www.qiybang.com/application/shared/core/Custom_Model.php

Line Number: 112