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 436
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)]> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| information_schema |
| menge001 |
| menge002 |
| menge003 |
| menge004 |
| menge006 |
| menge007 |
| menge008 |
| mysoc1 |
| mysocial_database |
| mysql |
| mytest |
| performance_schema |
| quantity001 |
| quantity002 |
| quantity003 |
| quantity004 |
| quantity007 |
| quantity008 |
| quantity035 |
| quantity035a |
| quantity036 |
| quantity037 |
| quantity038 |
| quantity038a |
| quantity039 |
| quantity040 |
| quantity041 |
| quantity043 |
| quantity044 |
| quantity045 |
| quantity047 |
| quantity048 |
| quantity049 |
| quantity051 |
| quantity052 |
| quantity30 |
| quantity31 |
| quantity50 |
| taadsasda |
| test001 |
| test002 |
| test003 |
| test004 |
| test005 |
| test006 |
| test007 |
| test008 |
| test009 |
| test010 |
| test011 |
| test012 |
| test013 |
| test014 |
| test015 |
| test016 |
| test019 |
| test020 |
| test021 |
| test022 |
| test023 |
| test024 |
| test025 |
| test026 |
| test027 |
| test028 |
| test030 |
| test031 |
| test032 |
| test033 |
| test034 |
| test035 |
| test036 |
| test037 |
| test038 |
| test039 |
| test040 |
| test041 |
| test042 |
| test043 |
| test044 |
| test045 |
| test046 |
| test047 |
| test048 |
| test049 |
| test050 |
| test051 |
| test052 |
+--------------------+
89 rows in set (0.044 sec)
MariaDB [(none)]> CREATE DATABASE test053;
Query OK, 1 row affected (0.002 sec)
MariaDB [(none)]> USE test053;
Database changed
MariaDB [test053]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.059 sec)
MariaDB [test053]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)
MariaDB [test053]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.033 sec)
MariaDB [test053]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.031 sec)
MariaDB [test053]> INSERT INTO abc (name1, name2) VALUES ("002", "002");
Query OK, 1 row affected (0.025 sec)
MariaDB [test053]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.059 sec)
MariaDB [test053]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)
MariaDB [test053]> INSERT INTO def (name4, name3) VALUES ("002", "001");
Query OK, 1 row affected (0.028 sec)
MariaDB [test053]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.025 sec)
MariaDB [test053]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001 | 001 |
| 001 | 002 |
| 002 | 001 |
| 002 | 002 |
+-------+-------+
4 rows in set (0.001 sec)
MariaDB [test053]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001 | 001 |
| 001 | 002 |
| abc | def |
+-------+-------+
3 rows in set (0.001 sec)
MariaDB [test053]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001 | 001 | 001 | 001 |
| 001 | 001 | 001 | 002 |
| 001 | 001 | abc | def |
| 001 | 002 | 001 | 001 |
| 001 | 002 | 001 | 002 |
| 001 | 002 | abc | def |
| 002 | 001 | 001 | 001 |
| 002 | 001 | 001 | 002 |
| 002 | 001 | abc | def |
| 002 | 002 | 001 | 001 |
| 002 | 002 | 001 | 002 |
| 002 | 002 | abc | def |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)
MariaDB [test053]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001 | 001 | 001 | 001 |
| 001 | 001 | 001 | 002 |
| 001 | 002 | 001 | 001 |
| 001 | 002 | 001 | 002 |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)
MariaDB [test053]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001 | 001 | 001 | 001 |
| 001 | 002 | 001 | 002 |
| 002 | 001 | 001 | 001 |
| 002 | 002 | 001 | 002 |
| NULL | NULL | abc | def |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)
MariaDB [test053]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 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 [test053]> QUIT
Bye
david@intel-compute-stick:~$
