MySQL损坏数据恢复

    mysql>CREATE DATABASE sakila

    mysql>USE sakila

    mysql>CREATE TABLE actor (

        actor_id SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT,

        first_name VARCHAR(45) NOT NULL,

        last_name VARCHAR(45) NOT NULL,

        last_update TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,

        PRIMARY KEY  (actor_id),

        KEY idx_actor_last_name (last_name)

      )ENGINE=InnoDB DEFAULT CHARSET=utf8

    ALTER TABLE {库名}.{表名} DISCARD TABLESPACE

    例:

    mysql>ALTER TABLE sakila.actor DISCARD TABLESPACE

    cp /backup_directory/actor.ibd path/to/mysql-5.7/data/sakila/

    ALTER TABLE {库名}.{表名} IMPORT TABLESPACESHOW WARNINGS

    例:

    mysql>ALTER TABLE sakila.actor IMPORT TABLESPACESHOW WARNINGS

    Query OK, 0 rows affected, 1 warning (0.15 sec)

    Warning | 1810 | InnoDB: IO Read error: (2, No such file or directory)

    Error opening './sakila/actor.cfg', will attempt to import

    without schema verification

    mysql>SELECT COUNT(*) FROM sakila.actor

    +----------+

    | count(*) |

    +----------+

    |      200 |

    +----------+

1、先在运行中输入services.msc，找到MysQL的服务，将其停止；2、然后备份新安装的MY.INI和DATA这两个目录，直接将其原来mysql/data下的文件拷到新安装的mysql/data目录下即可；3、启动MysQL服务。该方法只在新安装的数据库与旧数据库版本相同的情况下实验成果。重新打开navicat，发现原来的数据库都可以使用了。

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