谢谢楼上。
可是,我在Query Editor中运行check table Exercise.history,结果是:
Table Op Msg_type Msg_text
exercise.history check status OK
运行repair table Exercise.history,结果是:
Table Op Msg_type Msg_text
exercise.history repair error 13 for record at pos41323
exercise.history repair error Can't copy datafile-header to tempfile,error9
exercise.history repair status Operation failed