1.啟動MySql

/etc/init.d/mysql start

執行成功顯示：

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 18
Server version: 5.7.20-0ubuntu0.16.04.1 (Ubuntu)

Copyright (c) 2000, 2017, 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.

2.執行

mysql -u root -p

啟動成功：

[ ok ] Starting mysql (via systemctl): mysql.service.

3.建立資料庫firstDb

mysql->create database firstDb;
 

4.顯示已建立的資料表

mysql->show database;

顯示：

+--------------------+
| Database           |
+--------------------+
| information_schema |
| firstDatabase      |
| firstDb            |
| firstdb            |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
 

7 rows in set (0.08 sec)

5.使用建立的資料庫，也就是後面的操作是基於這個資料庫

mysql->use firstDb

6.建立一個表並新增內容，注意使用的是括號，可以一行一行輸入，結構比較清楚，最後再輸入分號“;”按回車，即可完成class表的建立。MySql關鍵字不區分大小寫。

create table class（
    -> teacher_num INT,
    -> teacher_name VARCHAR(8),
    -> student_num INT,
    -> student_name VARCHAR(20),
    -> GoodStudent TINYINT）;

7.用show tables 列出資料庫所有的的表

mysql->show tables;

+-------------------+
| Tables_in_firstDb |
+-------------------+
| class             |
+-------------------+
class即為之前建立的表。

8.檢查表結構

mysql> describe class;

9.向表中新增資料

（1）不需要按順序輸入：
mysql> insert into class(teacher_num,teacher_name,student_num,student_name,GoodStudent)VALUES(1,'Peter',20,'finee',14);
（2）需要按順序輸入也就是VALUES後的值與表中欄位的順序是一致的：
mysql> insert into class VALUES(1,'Peter',20,'finee',14);
（3）輸入多組資料：
mysql> insert into class VALUES(1,'Peter1',20,'finee1',14)，
VALUES(1,'Peter2',20,'finee2',14)，
VALUES(1,'Peter3',20,'finee3',14);