如何恢复mysql表中清除的数据

1、第一步，查询语句：select*fromtable_name或select*fromtable_namewhere[条件]

2、第二步，增加语句或插入数据insertintotable_name(clus...)values(values...)实例如图：

3、修改数据：updatetablenamesetxx=xx,xxx=xxwherexxx=xxxandxxx=xxx

4、第四步，删除语句deletetable_namewhere条件实例如图：

    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 |

    +----------+

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