MySQL 客户端工具使用

Strong 2021年02月28日 497次浏览

MySQL 客户端工具使用

1、MySQL程序组成

  • 客户端
    • mysql:CLI交互式客户端程序
    • mysql_secure_installation:安全初始化,强烈建议安装完以后执行此命令
    • mysqldump:mysql备份工具
    • mysqladmin
  • 服务器端
    • mysqld

2、MySQL监听地址

服务器监听的两种socket地址:

socket类型说明
ip socket默认监听在tcp的3306端口,支持远程通信
unix sock监听在sock文件上(/tmp/mysql.sock,/var/lib/mysql/mysql.sock)
仅支持本地通信
server地址只能是:localhost,127.0.0.1

3、客户端工具使用

//语法:mysql [OPTIONS] [database]
//常用的OPTIONS:
    -uUSERNAME      //指定用户名,默认为root
    -hHOST          //指定服务器主机,默认为localhost,推荐使用ip地址
    -pPASSWORD      //指定用户的密码
    -P#             //指定数据库监听的端口,这里的#需用实际的端口号代替,如-P3307
    -V              //查看当前使用的mysql版本
    -e              //不登录mysql执行sql语句后退出,常用于脚本
    

[root@localhost ~]# mysql -V
mysql  Ver 14.14 Distrib 5.7.23, for Linux (x86_64) using  EditLine wrapper

[root@localhost ~]# mysql -uroot -phzz123! -h127.0.0.1
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.23 MySQL Community Server (GPL)

Copyright (c) 2000, 2018, 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> 

//注意,不推荐直接在命令行里直接用-pPASSWORD的方式登录,而是使用-p选项,然后交互式输入密码

[root@localhost ~]# mysql -uroot -p -h127.0.0.1
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.23 MySQL Community Server (GPL)

Copyright (c) 2000, 2018, 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> 

//不进入数据库执行sql语句
[root@localhost ~]# mysql -uroot -p -h 127.0.0.1 -e 'SHOW DATABASES;'
Enter password:
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| hzz                |
+--------------------+