记录一下：关于mysql数据误删除恢复的问题

大概看来几篇博客：

1、delete的可以通过回滚(rollback)的方式恢复;但是前提是，你的数据表引擎是InnoDB而不是MyISAM,而且操作不是自动提交的

但是这种方式不可以恢复truncate删除的数据

mysql> show variables like '%autocommit%'
    -> ;
+------------------------+-------+
| Variable_name          | Value |
+------------------------+-------+
| autocommit             | ON    |
| wsrep_retry_autocommit | 1     |
+------------------------+-------+
2 rows in set (0.00 sec)
 
mysql> set autocommit=False;
Query OK, 0 rows affected (0.00 sec)
 
mysql> show variables like '%autocommit%'
    -> ;
+------------------------+-------+
| Variable_name          | Value |
+------------------------+-------+
| autocommit             | OFF   |
| wsrep_retry_autocommit | 1     |
+------------------------+-------+
2 rows in set (0.00 sec)
 
mysql>

mysql> show table status from test where name='user';
+------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+-----------------+----------+----------------+---------+
| Name | Engine | Version | Row_format | Rows | Avg_row_length | Data_length | Max_data_length | Index_length | Data_free | Auto_increment | Create_time         | Update_time         | Check_time | Collation       | Checksum | Create_options | Comment |
+------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+-----------------+----------+----------------+---------+
| user | MyISAM |      10 | Dynamic    |    5 |             20 |         144 | 281474976710655 |         3072 |        44 |              8 | 2017-01-11 18:03:54 | 2017-11-29 20:03:11 | NULL       | utf8_general_ci |     NULL |                |         |
+------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+-----------------+----------+----------------+---------+
1 row in set (0.01 sec)
 
mysql> mysql> show table status from test where name='tiger';
+-------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-------------------+----------+----------------+---------+
| Name  | Engine | Version | Row_format | Rows | Avg_row_length | Data_length | Max_data_length | Index_length | Data_free | Auto_increment | Create_time         | Update_time | Check_time | Collation         | Checksum | Create_options | Comment |
+-------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-------------------+----------+----------------+---------+
| tiger | InnoDB |      10 | Compact    |    3 |           5461 |       16384 |               0 |            0 |         0 |             14 | 2017-01-09 16:45:03 | NULL        | NULL       | latin1_swedish_ci |     NULL |                |         |
+-------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-------------------+----------+----------------+---------+
1 row in set (0.00 sec)
 
mysql>

2、第二种方法就是利用mysql的bin-log进行恢复

3、第三种方法，看你的数据库有没有定期备份机制，使用备份进行恢复

记得要及时进行恢复操作，时间久了，bin-log和备份数据都会被删除的

参考：

1、http://blog.51cto.com/gfsunny/1573944

2、https://www.cnblogs.com/dplearning/p/6394527.html

3、http://blog.csdn.net/weiwangsisoftstone/article/details/68945420

4、http://blog.csdn.net/u013803262/article/details/73044482