# 官方提供@yunTaoScripts Mariadb 🔥🔥

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# 基本概念与安装

RDBMS 关系型数据库管理系统,所谓的库就是一个文件夹,在库里有很多表。

  • 清屏可以使用 ctrl+l
  • 如果想使用其他结束符的话,使用 delmiter
  • 如果不想执行一条语句的话,在语句后面加上\c
  • 更好的显示效果,可以使用\G 结束
  • 提示符默认都是 mysql>,如果想更改提示符的话,可以使用\R
  • 在 mysql 提示符里执行系统命令 system
MariaDB [(none)]> system ls
aa.txt  id_rsa.pub  para.txt  test  yunpress  yuntao.work_bundle.crt  yuntao.work.key
MariaDB [(none)]> system pwd
/root
  • 查看所有库
MariaDB [mysql]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| member             |
| mysql              |
| performance_schema |
| test               |
+--------------------+
5 rows in set (0.00 sec)
  • 切换库
MariaDB [mysql]> use member;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
  • 查看当前库
MariaDB [member]> status
--------------
mysql  Ver 15.1 Distrib 5.5.68-MariaDB, for Linux (x86_64) using readline 5.1

Connection id:          15
Current database:       member
Current user:           root@localhost
SSL:                    Not in use
Current pager:          stdout
Using outfile:          ''
Using delimiter:        ;
Server:                 MariaDB
Server version:         5.5.68-MariaDB MariaDB Server
Protocol version:       10
Connection:             Localhost via UNIX socket
Server characterset:    latin1
Db     characterset:    latin1
Client characterset:    utf8
Conn.  characterset:    utf8
UNIX socket:            /var/lib/mysql/mysql.sock
Uptime:                 15 days 20 min 51 sec

Threads: 1  Questions: 345  Slow queries: 0  Opens: 20  Flush tables: 2  Open tables: 45  Queries per second avg: 0.000
--------------

# 基本操作

# DDL 数据定义语言

# DML 数据管理语言

# DQL 数据查询语言

最后修改时间: 12/31/2022, 12:00:03 PM