david@intel-compute-stick:/var/www/html/046$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 2543
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 test046;
Query OK, 1 row affected (0.023 sec)
MariaDB [(none)]> USE test046;
Database changed
MariaDB [test046]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.092 sec)
MariaDB [test046]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.049 sec)
MariaDB [test046]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.038 sec)
MariaDB [test046]> quit
Bye
david@intel-compute-stick:/var/www/html/046$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 2617
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 test046;
ERROR 1007 (HY000): Can't create database 'test046'; database exists
MariaDB [(none)]> INSERT INTO abc VALUES ("001", "002");
ERROR 1046 (3D000): No database selected
MariaDB [(none)]> use test046
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
MariaDB [test046]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.043 sec)
MariaDB [test046]> INSERT INTO abc (name1, name2) VALUES ("002", "001");
Query OK, 1 row affected (0.026 sec)
MariaDB [test046]> INSERT INTO abc (name2, name1) VALUES ("002", "002");
Query OK, 1 row affected (0.025 sec)
MariaDB [test046]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.040 sec)
MariaDB [test046]> INSERT INTO def (name3, name4) VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)
MariaDB [test046]> INSERT INTO def (name3, name4) VALUES ("abc", "abc");
Query OK, 1 row affected (0.029 sec)
MariaDB [test046]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001 | 001 |
| 001 | 002 |
| 002 | 001 |
| 002 | 002 |
+-------+-------+
4 rows in set (0.001 sec)
MariaDB [test046]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 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 [test046]> 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 (0.030 sec)
MariaDB [test046]> 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 [test046]> SELECT * FROM abc RIGHT 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 |
| NULL | NULL | abc | abc |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)
MariaDB [test046]> QUIT
Bye
david@intel-compute-stick:/var/www/html/046$
