ERROR 126 (HY000) at line 1: Incorrect key file for table '/tmp/#sql_6d45_0.MYI'

[恋喵大鲤鱼]

mysql在讲一个merge表的各个字段累加是报了上面的错误，SQL语句如下：

insert into ADD_FRIEND_CREDIT_RESULT.addfri_result_Hash${i} select uin,sum(active_days),sum(add_friend_count),sum(add_friend_uin_count),sum(impeach_uin_count),sum(black_count),sum(black_uin_count),sum(black_count1),sum(black_uin_count1),sum(add_refused_count),sum(add_refused_uin_count),sum(add_ignore_count),sum(add_ignore_uin_count),sum(add_agree_count) from ADD_FRIEND_CREDIT_RESULT.addfri_merge_table_Hash${i} group by uin

使用perror命令查看错误解释如下：
MySQL error code 126: Index file is crashed

请哪位前辈授业解惑，万分感激！

[恋喵大鲤鱼]

已经解决该问题啦

[zjcxc]

什么情况 ？