2.MySQL用户管理，常用SQL语句，MySQL数据库备份与恢复

ezeke

[root@xavi ~]# mysqldump -uroot -pxavilinux -d mysql2 > /tmp/mysql2.sql　　Warning: Using a password on the command line interface can be insecure.
　　[root@xavi ~]# less /tmp/mysql2.sql
　　[root@xavi ~]# less /tmp/mysql2.sql
　　-- MySQL dump 10.13  Distrib 5.6.35, for linux-glibc2.5 (x86_64)
　　--
　　-- Host: localhost    Database: mysql2
　　-- ------------------------------------------------------
　　-- Server version       5.6.35
　　/*!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 `columns_priv`
　　--
　　DROP TABLE IF EXISTS `columns_priv`;
　　/*!40101 SET @saved_cs_client     = @@character_set_client */;
　　/*!40101 SET character_set_client = utf8 */;
　　CREATE TABLE `columns_priv` (
　　`Host` char(60) COLLATE utf8_bin NOT NULL DEFAULT '',
　　`Db` char(64) COLLATE utf8_bin NOT NULL DEFAULT '',
　　`User` char(16) COLLATE utf8_bin NOT NULL DEFAULT '',
　　`Table_name` char(64) COLLATE utf8_bin NOT NULL DEFAULT '',
　　`Column_name` char(64) COLLATE utf8_bin NOT NULL DEFAULT '',
　　`Timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
　　`Column_priv` set('Select','Insert','Update','References') CHARACTER SET utf8 NOT NULL DEFAULT '',
　　PRIMARY KEY (`Host`,`Db`,`User`,`Table_name`,`Column_name`)
　　) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Column privileges';
　　/*!40101 SET character_set_client = @saved_cs_client */;
　　--
　　-- Table structure for table `db`
　　--
　　DROP TABLE IF EXISTS `db`;
　　/*!40101 SET @saved_cs_client     = @@character_set_client */;
　　/*!40101 SET character_set_client = utf8 */;
　　CREATE TABLE `db` (