【筆記二】：數據庫的創建、選擇、刪除

目錄

1，登陸 MySQL 服務

2，數據庫的創建

3，查看數據庫

4，使用數據庫

5，刪除數據庫

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1，登陸 MySQL 服務

[root@raspberrypi ~]$ mysql -u root -p
Enter password: 
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 73
Server version: 10.3.22-MariaDB-0+deb10u1 Raspbian 10

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> 

2，數據庫的創建

語法：CREATE DATABASE [IF NOT EXISTS] mydb1 [CHARSET=utf8]

• 創建一個名爲mydb的數據庫：

MariaDB [(none)]> create database mydb;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> 

3，查看數據庫

show databases;

MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mydb               |
| mysql              |
| performance_schema |
+--------------------+
4 rows in set (0.001 sec)

MariaDB [(none)]> 

4，使用數據庫

use <數據庫名>;

MariaDB [(none)]> use mydb;
Database changed
MariaDB [mydb]> 

5，刪除數據庫

drop database <數據庫名>;

MariaDB [mydb]> drop database mydb;
Query OK, 0 rows affected (0.002 sec)

MariaDB [(none)]> 

 

參考：https://www.runoob.com/mysql/mysql-create-database.html