mysqldump 和还原

<pre name="code" class="sql">mysqldump 最常用于备份一个整个的数据库：
shell> mysqldump db_name

 >backup-file.sql



你可以这样将转储文件读回到服务器：
shell> mysql db_name
 < backup-file.sql




相应的，在目标服务器上导入数据的命令就是：



shell> mysqladmin create target_db_name 




shell> mysql target_db_name < backup-file.sql 




下面的例子是把replication_test库dump到D:/replication_test.sql文件，在生成的SQL中加入DROP TABLE IF EXISTS。



mysqldump -u root -proot --add-drop-database --add-drop-table replication_test > D:/replication_test.sql





以下是几个常用的简单地使用方法是：

1.导出整个数据库

   mysqldump -u 用户名 -p 数据库名 > 导出的文件名 

 

2.导出一个表

   mysqldump -u 用户名 -p 数据库名 表名> 导出的文件名



3.导出一个数据库结构

   mysqldump -


-u 用户名 -p 数据库名 --no-data 




--add-drop-database --add-drop-table 


 smgp_apps_wcnc >d:/wcnc_db.sql



   
--no-data:
 不dump数据库，
--add-drop-database  创建数据库之前加一个drop database
 --add-drop-table 在每个create语句之前增加一个drop table 


mysql 备份和还原数据库:
[mysql@master ~]$ mysqldump -utest -p123456 plmsdb >plmsdb
Warning: Using a password on the command line interface can be insecure.


mysql> SELECT table_name,table_schema  FROM information_schema.TABLES  where table_schema = 'plmsdb';
+------------+--------------+
| table_name | table_schema |
+------------+--------------+
| area       | plmsdb       |
| person     | plmsdb       |
| test       | plmsdb       |
+------------+--------------+
3 rows in set (0.00 sec)

mysql> select * from area;
Empty set (0.00 sec)


mysql> select * from person;
+--------+------+------------+
| number | name | birthday   |
+--------+------+------------+
|      1 | aaa  | 2014-01-01 |
|      2 | b    | 2015-05-01 |
+--------+------+------------+
2 rows in set (0.00 sec)


mysql> select * from test;
+------+
| id   |
+------+
|    1 |
|  100 |
+------+
2 rows in set (0.00 sec



变更数据:

mysql> select * from area;
+------+
| id   |
+------+
|    1 |
+------+
1 row in set (0.00 sec)

mysql> select * from person;
+--------+------+------------+
| number | name | birthday   |
+--------+------+------------+
|      1 | aaa  | 2014-01-01 |
+--------+------+------------+
1 row in set (0.00 sec)


还原数据库:

[mysql@master ~]$ mysql -utest -p123456 -D plmsdb<plmsdb.sql
mysql> select * from area;
Empty set (0.00 sec)

mysql> select * from person;
+--------+------+------------+
| number | name | birthday   |
+--------+------+------------+
|      1 | aaa  | 2014-01-01 |
|      2 | b    | 2015-05-01 |
+--------+------+------------+
2 rows in set (0.00 sec)




mysql 备份表:
[mysql@master ~]$ mysqldump -u test -p123456 test t1 >t1.sql
Warning: Using a password on the command line interface can be insecure.
[mysql@master ~]$ cat t1.sql 
-- MySQL dump 10.13  Distrib 5.6.16, for Linux (x86_64)
--
-- Host: localhost    Database: test
-- ------------------------------------------------------
-- Server version	5.6.16-log

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Table structure for table `t1`
--

DROP TABLE IF EXISTS `t1`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `t1` (
  `id` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `t1`
--

LOCK TABLES `t1` WRITE;
/*!40000 ALTER TABLE `t1` DISABLE KEYS */;
INSERT INTO `t1` VALUES (1),(2),(3);
/*!40000 ALTER TABLE `t1` ENABLE KEYS */;
UNLOCK TABLES;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

-- Dump completed on 2015-03-26  7


导回数据:

 mysql -utest -p123456 -Dtest <t1.sql