mysql备份恢复

 1、备份确定的表

mysqldump -u username -p dbname table1 table2 ...> BackupName.sql

例子，备份coshaho001下customer，product表

备份结果

-- MySQL dump 10.13  Distrib 5.7.17, for Win64 (x86_64)
--
-- Host: localhost    Database: coshaho001
-- ------------------------------------------------------
-- Server version    5.7.17-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 `customer`
--

DROP TABLE IF EXISTS `customer`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `customer` (
  `CustomerID` varchar(50) NOT NULL,
  `CustomerName` varchar(50) DEFAULT NULL,
  PRIMARY KEY (`CustomerID`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `customer`
--

LOCK TABLES `customer` WRITE;
/*!40000 ALTER TABLE `customer` DISABLE KEYS */;
INSERT INTO `customer` VALUES ('ct1','客户1'),('ct2','客户2'),('ct3','客户3'),('ct4','客户4'),('ct5','客户5'),('ct6','客户6'),('ct7','客户7'),('ct8','客户8'),('ct9','客户9'),('ct10','客户10');
/*!40000 ALTER TABLE `customer` ENABLE KEYS */;
UNLOCK TABLES;

--
-- Table structure for table `product`
--

DROP TABLE IF EXISTS `product`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `product` (
  `ProductID` varchar(50) NOT NULL,
  `ProductName` varchar(50) DEFAULT NULL,
  `Price` decimal(10,0) DEFAULT NULL,
  PRIMARY KEY (`ProductID`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `product`
--

LOCK TABLES `product` WRITE;
/*!40000 ALTER TABLE `product` DISABLE KEYS */;
INSERT INTO `product` VALUES ('pd1','产品1',1),('pd2','产品2',2),('pd3','产品3',3),('pd4','产品4',4),('pd5','产品5',5),('pd6','产品6',6),('pd7','产品7',7),('pd8','产品8',8),('pd9','产品9',9),('pd10','产品10',10);
/*!40000 ALTER TABLE `product` 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 2017-08-07 22:27:57

2、备份多个数据库

mysqldump -u username -p --databases dbname2 dbname2 > Backup.sql

例子，备份coshaho001，coshaho002库

3、 备份所有库

mysqldump -u username -p --all-databases > BackupName.sql

 4、数据库恢复

mysql -u root -p < Backup.sql

例子

 或者

mysql -uroot -p
source Backup.sql;