Discuz! info: MySQL Query Error

Time: 2014-10-1 10:15pm
Script: /dz5/forumdisplay.php

SQL: SELECT t.* FROM [Table]threads t
WHERE t.fid='57' AND t.displayorder IN (0, 1)
ORDER BY t.displayorder DESC, t.lastpost DESC
LIMIT 59, 30
Error: Table './dz5/[Table]threads' is marked as crashed and should be repaired
Errno.: 145

Similar error report has beed dispatched to administrator before.