UCenter info: MySQL Query Error Error:Unknown column 'app8' in 'where clause'

UCenter info: MySQL Query Error
SQL:SELECT * FROM [Table]notelist WHERE closed='0' AND app8<'1' AND app8>'-5' LIMIT 1
Error:Unknown column 'app8' in 'where clause'
Errno:1054


在论坛后台操作，底部出现这段代码？？？
谢谢！