使用mysqldump备份与恢复数据的一个例子

建立模拟数据

create database test;
use test;

create table t0(n int, str varchar(10));
create table t1(n int, str varchar(10));

insert into t0 values(1, "szn"),(2, "slz");
insert into t1 values(2, "szn2"),(3, "slz3");

使用mysqldump

shell> mysqldump -u root -p --databases test > c:\\out.sql
--备注:以上代码在mysql安装路径(例如:C:\Program Files\MySQL\MySQL Server 8.0\bin)下以cmd命令输入

输出文件展示

-- MySQL dump 10.13  Distrib 8.0.17, for Win64 (x86_64)
--
-- Host: localhost    Database: test
-- ------------------------------------------------------
-- Server version   8.0.17

/*!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 */;
/*!50503 SET NAMES utf8mb4 */;
/*!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 */;

--
-- Current Database: `test`
--

CREATE DATABASE /*!32312 IF NOT EXISTS*/ `test` /*!40100 DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci */ /*!80016 DEFAULT ENCRYPTION='N' */;

USE `test`;

--
-- Table structure for table `t0`
--

DROP TABLE IF EXISTS `t0`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!50503 SET character_set_client = utf8mb4 */;
CREATE TABLE `t0` (
  `n` int(11) DEFAULT NULL,
  `str` varchar(10) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `t0`
--

LOCK TABLES `t0` WRITE;
/*!40000 ALTER TABLE `t0` DISABLE KEYS */;
INSERT INTO `t0` VALUES (1,'szn'),(2,'slz');
/*!40000 ALTER TABLE `t0` ENABLE KEYS */;
UNLOCK TABLES;

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

DROP TABLE IF EXISTS `t1`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!50503 SET character_set_client = utf8mb4 */;
CREATE TABLE `t1` (
  `n` int(11) DEFAULT NULL,
  `str` varchar(10) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
/*!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 (2,'szn2'),(3,'slz3');
/*!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 2019-12-09 21:37:41

备份数据重新载入

drop database test;
--先删除数据，来验证数据载入的正确性

shell> mysql -u root -p < c:\\out.sql
--备注:以上代码在mysql安装路径下以cmd命令输入