请检查执行语句是否正确或录入内容是否正确!

错误文件：/news_view.php
错误信息：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 'ORDER BY posttime DESC' at line 1
Error sql: SELECT id,classid,title FROM `nl_news` WHERE classid=16 AND posttime< ORDER BY posttime DESC

请检查执行语句是否正确或录入内容是否正确!

错误文件：/news_view.php
错误信息：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 'ORDER BY posttime ASC' at line 1
Error sql: SELECT id,classid,title FROM `nl_news` WHERE classid=16 AND posttime> ORDER BY posttime ASC