用mysqldump备份还原某个数据库具体案例
现在dan_test数据库下有两条数据：
此时，备份一下dan_test数据库：
C:\Users\Administrator>mysqldump -uroot -p dan_test > D:\mysql_bak\dan_test_bak_20140911
Enter password: *******
删除这两条数据：
恢复这两条数据（可以用mysql <备份文件恢复；也可以用souce 备份文件恢复）：
C:\Users\Administrator>mysql-u root -p dan_test < D:\mysql_bak\dan_test_bak_20140911
Enter password: *******
C:\Users\Administrator>mysql -u root -p
Enter password: *******
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 35
Server version: 5.5.21 MySQL Community Server (GPL)
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
或者：
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> use dan_test;
Database changed
mysql> source D:\mysql_bak\dan_test_bak_20140911
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.08 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.12 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 2 rows affected (0.03 sec)
Records: 2 Duplicates: 0 Warnings: 0
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
mysql> select *
-> from t;
+------+
| id |
+------+
| 1 |
| 2 |
+------+
2 rows in set (0.00 sec)
mysql>
----若想了解怎么用mysqldump备份还原所有数据库具体案例，请参考http://blog.csdn.net/yabingshi_tech/article/details/39208599