mysqldump怎么用

这篇文章主要介绍了mysqldump怎么用，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。

一、创建表并导入数据
[root@node1 ~]# mysql -u test -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.7.11 MySQL Community Server (GPL)
Copyright (c) 2000, 2016, 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.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> 
mysql> 
mysql> 
mysql> 
mysql> use testdb;
Database changed
mysql> 
mysql> 

mysql> create table test1 (id int(10),name varchar(10));
Query OK, 0 rows affected (0.03 sec)
mysql> 
mysql> 
mysql> 
mysql> 
mysql> 
mysql> insert into test1 values (1,'jack');
Query OK, 1 row affected (0.02 sec)
mysql> insert into test1 values (2,'mike');
Query OK, 1 row affected (0.00 sec)
mysql> insert into test1 values (2,'joe');
Query OK, 1 row affected (0.00 sec)
mysql> 

mysql> select * from test1;
+------+------+
| id   | name |
+------+------+
|    1 | jack |
|    2 | mike |
|    2 | joe  |
+------+------+
3 rows in set (0.00 sec)

二、导出表到文件中

[root@node1 testdb]# mysqldump -u test -p testdb test1 >test1.sql
Enter password: 
[root@node1 testdb]# ls
db.opt  test1.dmp  test1.frm  test1.ibd  test1.sql
[root@node1 testdb]# ls -l
total 124
-rw-r----- 1 mysql mysql    65 Feb 18 15:55 db.opt
-rw-r--r-- 1 root  root   1846 Feb 23 09:37 test1.dmp
-rw-r----- 1 mysql mysql  8586 Feb 23 09:35 test1.frm
-rw-r----- 1 mysql mysql 98304 Feb 23 09:36 test1.ibd
-rw-r--r-- 1 root  root   1846 Feb 23 09:38 test1.sql
[root@node1 testdb]# pwd
/var/lib/mysql/testdb
[root@node1 testdb]# 

三、删除数据库中的表
mysql> drop table test1;
Query OK, 0 rows affected (0.00 sec)
mysql> 
mysql> 
mysql> 
mysql> show tables
    -> ;
Empty set (0.00 sec)

四、将表导入到数据库中 
mysql> source /var/lib/mysql/testdb/test1.sql
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, 1 warning (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 (0.01 sec)


Query OK, 0 rows affected (0.00 sec)


Query OK, 0 rows affected (0.01 sec)


Query OK, 0 rows affected (0.00 sec)


Query OK, 3 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, 1 warning (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)

五、查看表和数据正常
mysql> show tables
    -> ;
+------------------+
| Tables_in_testdb |
+------------------+
| test1            |
+------------------+
1 row in set (0.00 sec)


mysql> select * from test1;
+------+------+
| id   | name |
+------+------+
|    1 | jack |
|    2 | mike |
|    2 | joe  |
+------+------+
3 rows in set (0.00 sec)
mysql> 


六，使用master data参数可以得到日志的偏移位置，以便数据库迁移的时候恢复
[root@node1 backup]# mysqldump -u root -p  --master-data=2 --databases testdb > test2.sql
Enter password: 
[root@node1 backup]# ll
total 4
-rw-r--r-- 1 root root 2053 Apr 22 05:28 test2.sql
[root@node1 backup]# more test2.sql 
-- MySQL dump 10.13  Distrib 5.7.11, for Linux (i686)
--
-- Host: localhost    Database: testdb
-- ------------------------------------------------------
-- Server version       5.7.11-log


;
;
;
;
;
;
;
;
;
;


--
-- Position to start replication or point-in-time recovery from
--


-- CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000013', MASTER_LOG_POS=2198;


--
-- Current Database: `testdb`
--


CREATE DATABASE `testdb` ;


USE `testdb`;


--
-- Table structure for table `t`
--


DROP TABLE IF EXISTS `t`;
;
;
CREATE TABLE `t` (
  `id` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
;


--
-- Dumping data for table `t`
--


LOCK TABLES `t` WRITE;
;
INSERT INTO `t` VALUES (1),(2);
;
UNLOCK TABLES;
;


;
;
;
;
;
;
;


-- Dump completed on 2016-04-22  5:28:41
[root@node1 backup]#  

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