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HomeDatabaseMysql Tutorialmysql导入数据导数据提示Duplicate entryfor key 错误

mysql导入数据导数据提示Duplicate entryfor key 错误 下面我来分析一下我的解决方法,有需要学习的朋友可参考一下。

之前服务器数据丢失后决定搬家了用PHPMYADMIN导出,因为数据库文件比较大,所以直接使用MYSQL命令直接导入

MySQL导出导入命令
但是结果却不断的出现

ERROR 1062 (23000) at line 1262: Duplicate entry '?�ꡣ�H�o' for key 2
然后就中止了.NND这家伙吃软不吃硬。来硬的。。 --force。强行导入。不退出
# mysql -u root -p fukai --force Enter password:
ERROR 1062 (23000) at line 1262: Duplicate entry '?�ꡣ�H�o' for key 2
ERROR 1062 (23000) at line 1263: Duplicate entry 'm?oʙ�H�m' for key 2
ERROR 1062 (23000) at line 1271: Duplicate entry '?���^��΢Ц' for key 2
ERROR 1062 (23000) at line 5182: Duplicate entry '?�ꡣ�H�o' for key 2
ERROR 1062 (23000) at line 5187: Duplicate entry '?���^��΢Ц' for key 2
ERROR 1231 (42000) at line 7268: Variable 'sql_mode' can't be set to the value of 'NULL'

yingouqlj@qljlearnhost:/home/jump$ mysql uynetwork Enter password:
ERROR 1062 (23000) at line 20449: Duplicate entry '??????' for key 1费解


上网查阅后有说使用-FORCE 强制导入

mysql uynetwork 但是还是存在问题
最后发现原来在PHPMYADMIN导出的时候文件编码是UTF-8的最后使用

 代码如下 复制代码

mysql uynetwork

总结

Duplicate entry...for key...的错误原因是主键的唯一值重复,在对数据库进行修改、插入操作时,一但主键的唯一值重复就会报此错误,有时在表中存在多个主键时,对表操作仍然报此错误,是因为对该表的索引造成的。例如一个表中有 id1,id2两个主键,但是在插入数据时已经存在了ff,11这样一条纪录,再插入ff,22这样一条记录应该是没问题的,但是却报出上面这个错误,导致的原因就是索引时只对id1这个字段进行了索引,没有对id2进行联合索引,所以在插入ff,22这条记录时会报错。

处理方法:在该表的Indexes中的index_1进行处理,加入另外一个主键就可以了。

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