LINUX

Das universelle Betriebssystem

Eine Einführung - Teil 14

Deutsche Angestellten Akademie

lampp stack

~$ sudo apt install apache2 mysql-server phpmyadmin

~$ mysql -u root -p
MariaDB [(none)]> CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'some_very_complex_password';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON * . * TO 'newuser'@'localhost'; FLUSH PRIVILEGES;
MariaDB [(none)]> \q

• http://localhost/phpmyadmin
• user: phpmyadmin
• http://localhost/phpmyadmin

mysql

~$ sudo mysql
# oder:
~$ mysql -u BENUTZERNAME -p -h localhost

CREATE DATABASE IF NOT EXISTS test;

USE test;

CREATE TABLE IF NOT EXISTS books (
  BookID INT NOT NULL PRIMARY KEY AUTO_INCREMENT, 
  Title VARCHAR(100) NOT NULL, 
  SeriesID INT, AuthorID INT);

CREATE TABLE IF NOT EXISTS authors 
(id INT NOT NULL PRIMARY KEY AUTO_INCREMENT);

CREATE TABLE IF NOT EXISTS series 
(id INT NOT NULL PRIMARY KEY AUTO_INCREMENT);

INSERT INTO books (Title,SeriesID,AuthorID) 
VALUES('The Fellowship of the Ring',1,1), 
      ('The Two Towers',1,1), ('The Return of the King',1,1),  
      ('The Sum of All Men',2,2), ('Brotherhood of the Wolf',2,2), 
      ('Wizardborn',2,2), ('The Hobbbit',0,1);

SHOW TABLES;

+----------------+
| Tables_in_test |
+----------------+
| authors        |
| books          |
| series         |
+----------------+
3 rows in set (0.00 sec)
					

DESCRIBE books;

+----------+--------------+------+-----+---------+----------------+
| Field    | Type         | Null | Key | Default | Extra          |
+----------+--------------+------+-----+---------+----------------+
| BookID   | int(11)      | NO   | PRI | NULL    | auto_increment |
| Title    | varchar(100) | NO   |     | NULL    |                |
| SeriesID | int(11)      | YES  |     | NULL    |                |
| AuthorID | int(11)      | YES  |     | NULL    |                |
+----------+--------------+------+-----+---------+----------------+
					

SELECT * FROM books;

+--------+----------------------------+----------+----------+
| BookID | Title                      | SeriesID | AuthorID |
+--------+----------------------------+----------+----------+
|      1 | The Fellowship of the Ring |        1 |        1 |
|      2 | The Two Towers             |        1 |        1 |
|      3 | The Return of the King     |        1 |        1 |
|      4 | The Sum of All Men         |        2 |        2 |
|      5 | Brotherhood of the Wolf    |        2 |        2 |
|      6 | Wizardborn                 |        2 |        2 |
|      7 | The Hobbbit                |        0 |        1 |
+--------+----------------------------+----------+----------+
7 rows in set (0.00 sec)

INSERT INTO books (Title, SeriesID, AuthorID)
VALUES ("Lair of Bones", 2, 2);

Query OK, 1 row affected (0.00 sec)

SELECT * FROM books;

UPDATE books 
SET Title = "The Hobbit" 
WHERE BookID = 7;

Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0