MySQL通过Binlog恢复删除的表

查看log-bin是否开启：
mysql> show variables like '%log%bin%';
+---------------------------------+-------+
| Variable_name | Value |
+---------------------------------+-------+
| log_bin | ON |
| log_bin_trust_function_creators | OFF |
| sql_log_bin | ON |
+---------------------------------+-------+
3 rows in set (0.00 sec)

用sakila数据库测试：
mysql> use sakila;
Database changed

查看表内容：
mysql> select * from yoon;
+----+------+
| id | name |
+----+------+
| 1 | yoon |
| 7 | aaa |
+----+------+
2 rows in set (0.00 sec)

查看日志信息：
mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000025 | 932 | | |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

mysql> drop table yoon;
Query OK, 0 rows affected (0.00 sec)

刷新日志：
mysql> flush logs;
Query OK, 0 rows affected (0.01 sec)

mysql> select * from yoon;
ERROR 1146 (42S02): Table 'sakila.yoon' doesn't exist

mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000026 | 107 | | |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

[root@yoon data]# ls
ibdata1 ib_logfile0 ib_logfile2 mysql-bin.000025 mysql-bin.index rocover.sql test
ibdata2 ib_logfile1 mysql mysql-bin.000026 performance_schema sakila

[root@yoon data]# mysqlbinlog mysql-bin.000025 | grep --ignore-case DROP -A3 -B4
/*!\C utf8 *//*!*/;
SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=33/*!*/;
SET @@session.lc_time_names=0/*!*/;
SET @@session.collation_database=DEFAULT/*!*/;
DROP TABLE `yoon` /* generated by server */
/*!*/;
# at 215
#150814 3:34:55 server id 360360 end_log_pos 379 Query thread_id=1 exec_time=3215 error_code=0
--
COMMIT/*!*/;
# at 932
#150814 4:42:00 server id 360360 end_log_pos 1040 Query thread_id=1 exec_time=0 error_code=0
SET TIMESTAMP=1439541720/*!*/;
DROP TABLE `yoon` /* generated by server */
/*!*/;
# at 1040
#150814 4:42:10 server id 360360 end_log_pos 1083 Rotate to mysql-bin.000026 pos: 4

mysql> select from_unixtime('1439541720');
+-----------------------------+
| from_unixtime('1439541720') |
+-----------------------------+
| 2015-08-14 04:42:00 |
+-----------------------------+
1 row in set (0.00 sec)

###如果从上次备份刷新binlog，到发现表被删掉的过程中产生了多个binlog，则要按照binlog产生的顺序，
那么恢复的次序应该是按照binglog的产生的序号，从小到大依次恢复###

[root@yoon data]# mysqlbinlog -d sakila --stop-datetime='2015-08-14 04:42:00' mysql-bin.000025 > recover_sakila.sql

[root@yoon data]# mysql -uroot -p < recover_sakila.sql
Enter password:

mysql> select * from yoon;
+----+------+
| id | name |
+----+------+
| 1 | yoon |
| 7 | aaa |
+----+------+
2 rows in set (0.00 sec)

过滤方法：（因为测试中只有一个表，而生产环境中就会有多张表）
[root@yoon data]# more recover_sakila.sql | grep --ignore-case -E 'insert|update|select|delete' -A2 -B2 | grep yoon

如果表名包含yoon_log,yoon_order,只想导出yoon表的话，+个-w
[root@yoon data]# more recover_sakila.sql | grep --ignore-case -E 'insert' -A2 -B2 | grep -w yoon > yoon.sql
insert into yoon(name) values ('yoon')
insert into yoon(name) values ('aaa')

[root@yoon data]# more recover_sakila.sql | grep --ignore-case -E 'create' -A2 -B2 | grep yoon
create table yoon (id int(11) unsigned NOT NULL AUTO_INCREMENT,name varchar(20),PRIMARY KEY (`id`))

用sed可导出所有语句不会截断：

sed -n "/insert into yoon/,/;/p" yoon.sql |sed 's#\/\*!\*\/##'