错误原因：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 '' at line 1

select * from pwn_news_con where catid=

错误原因：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 dtime desc limit 0,10' at line 1

select * from `pwn_news_con` where catid= order by dtime desc limit 0,10