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 2772
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 test048;
Query OK, 1 row affected (0.035 sec)
MariaDB [(none)]> USE test048;
Database changed
MariaDB [test048]> CREATE TABLE abc (abc VARCHAR (32), def VARCHAR (32));
Query OK, 0 rows affected (0.092 sec)
MariaDB [test048]> CREATE TABLE def (ijk VARCHAR (32), xyz VARCHAR (32));
Query OK, 0 rows affected (0.064 sec)
MariaDB [test048]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.041 sec)
MariaDB [test048]> INSERT INTO abc (abc, def) VALUES ("001", "002");
Query OK, 1 row affected (0.035 sec)
MariaDB [test048]> INSERT INTO abc (def, abc) VALUES ("001", "002");
Query OK, 1 row affected (0.026 sec)
MariaDB [test048]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.028 sec)
MariaDB [test048]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.028 sec)
MariaDB [test048]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)
MariaDB [test048]> INSERT INTO def VALUES ("abc", "abc");
Query OK, 1 row affected (0.028 sec)
MariaDB [test048]> SELECT * FROM abc;
+------+------+
| abc | def |
+------+------+
| 001 | 001 |
| 001 | 002 |
| 002 | 001 |
| 002 | 002 |
+------+------+
4 rows in set (0.001 sec)
MariaDB [test048]> SELECT * FROM def;
+------+------+
| ijk | xyz |
+------+------+
| 001 | 001 |
| 001 | 002 |
| abc | abc |
+------+------+
3 rows in set (0.001 sec)
MariaDB [test048]> SELECT * FROM abc JOIN def;
+------+------+------+------+
| abc | def | ijk | xyz |
+------+------+------+------+
| 001 | 001 | 001 | 001 |
| 001 | 001 | 001 | 002 |
| 001 | 001 | abc | abc |
| 001 | 002 | 001 | 001 |
| 001 | 002 | 001 | 002 |
| 001 | 002 | abc | abc |
| 002 | 001 | 001 | 001 |
| 002 | 001 | 001 | 002 |
| 002 | 001 | abc | abc |
| 002 | 002 | 001 | 001 |
| 002 | 002 | 001 | 002 |
| 002 | 002 | abc | abc |
+------+------+------+------+
12 rows in set (0.002 sec)
MariaDB [test048]> SELECT * FROM abc INNER JOIN def ON abc.abc = def.ijk;
+------+------+------+------+
| abc | def | ijk | xyz |
+------+------+------+------+
| 001 | 001 | 001 | 001 |
| 001 | 001 | 001 | 002 |
| 001 | 002 | 001 | 001 |
| 001 | 002 | 001 | 002 |
+------+------+------+------+
4 rows in set (0.002 sec)
MariaDB [test048]> SELECT * FROM abc LEFT JOIN def ON abc.def = def.xyz;
+------+------+------+------+
| abc | def | ijk | xyz |
+------+------+------+------+
| 001 | 001 | 001 | 001 |
| 002 | 001 | 001 | 001 |
| 001 | 002 | 001 | 002 |
| 002 | 002 | 001 | 002 |
+------+------+------+------+
4 rows in set (0.002 sec)
MariaDB [test048]> SELECT * FROM abc RIGHT JOIN def ON abc.def = def.xyz;
+------+------+------+------+
| abc | def | ijk | xyz |
+------+------+------+------+
| 001 | 001 | 001 | 001 |
| 001 | 002 | 001 | 002 |
| 002 | 001 | 001 | 001 |
| 002 | 002 | 001 | 002 |
| NULL | NULL | abc | abc |
+------+------+------+------+
5 rows in set (0.002 sec)
MariaDB [test048]> quit
Bye
david@intel-compute-stick:~$
