/media/sda-magnetic/david/Dok-15-2023-11-27/informatik/www-intel-compute-stick-2022-06-13/064/output01.txt

david@intel-compute-stick:~$ mysql -u root -p
Enter password: 
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 844
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

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)]> CREATE DATABASE test064;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test064;
Database changed
MariaDB [test064]> CREATE TABLE a (n1 VARCHAR (4), n2 VARCHAR (4));
Query OK, 0 rows affected (0.057 sec)

MariaDB [test064]> CREATE TABLE b (n3 VARCHAR (4), n4 VARCHAR (4));
Query OK, 0 rows affected (0.058 sec)

MariaDB [test064]> INSERT INTO a (n1, n2) VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test064]> INSERT INTO a (n1, n2) VALUES ("001", "002");
Query OK, 1 row affected (0.026 sec)

MariaDB [test064]> INSERT INTO a (n1, n2) VALUES ("002", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test064]> INSERT INTO a (n1, n2) VALUES ("002", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test064]> INSERT INTO b (n3, n4) VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test064]> INSERT INTO b (n3, n4) VALUES ("001", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test064]> SELECT * FROM a;
+------+------+
| n1   | n2   |
+------+------+
| 001  | 001  |
| 001  | 002  |
| 002  | 001  |
| 002  | 002  |
+------+------+
4 rows in set (0.001 sec)

MariaDB [test064]> SELECT * FROM b
    -> ;
+------+------+
| n3   | n4   |
+------+------+
| 001  | 001  |
| 001  | 002  |
+------+------+
2 rows in set (0.001 sec)

MariaDB [test064]> SELECT * FROM a JOIN b;
+------+------+------+------+
| n1   | n2   | n3   | n4   |
+------+------+------+------+
| 001  | 001  | 001  | 001  |
| 001  | 001  | 001  | 002  |
| 001  | 002  | 001  | 001  |
| 001  | 002  | 001  | 002  |
| 002  | 001  | 001  | 001  |
| 002  | 001  | 001  | 002  |
| 002  | 002  | 001  | 001  |
| 002  | 002  | 001  | 002  |
+------+------+------+------+
8 rows in set (0.001 sec)

MariaDB [test064]> SELECT * FROM a INNER JOIN b ON a.n1 = b.n3;
+------+------+------+------+
| n1   | n2   | n3   | n4   |
+------+------+------+------+
| 001  | 001  | 001  | 001  |
| 001  | 001  | 001  | 002  |
| 001  | 002  | 001  | 001  |
| 001  | 002  | 001  | 002  |
+------+------+------+------+
4 rows in set (0.002 sec)

MariaDB [test064]> SELECT * FROM a RIGHT JOIN b ON a.n1 = b.n3;
+------+------+------+------+
| n1   | n2   | n3   | n4   |
+------+------+------+------+
| 001  | 001  | 001  | 001  |
| 001  | 001  | 001  | 002  |
| 001  | 002  | 001  | 001  |
| 001  | 002  | 001  | 002  |
+------+------+------+------+
4 rows in set (0.002 sec)

MariaDB [test064]> SELECT * FROM a LEFT JOIN b ON a.n1 = b.n3;
+------+------+------+------+
| n1   | n2   | n3   | n4   |
+------+------+------+------+
| 001  | 001  | 001  | 001  |
| 001  | 002  | 001  | 001  |
| 001  | 001  | 001  | 002  |
| 001  | 002  | 001  | 002  |
| 002  | 001  | NULL | NULL |
| 002  | 002  | NULL | NULL |
+------+------+------+------+
6 rows in set (0.002 sec)

MariaDB [test064]> QUIT
Bye
david@intel-compute-stick:~$