安全警告：MySql Error！

错误文件：/products-20-11.html
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 'or parentstr like '%,,%') and deltime=0 order by orderid desc' at line 1 Error sql: select * from `ly_infoimg` where siteid=1 and checkinfo=true and (classid= or parentstr like '%,,%') and deltime=0 order by orderid desc