david@intel-compute-stick:/var/www/html/035$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 1923
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 test036;
Query OK, 1 row affected (0.001 sec)
MariaDB [(none)]> USE test036
Database changed
MariaDB [test036]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.061 sec)
MariaDB [test036]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.049 sec)
MariaDB [test036]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.034 sec)
MariaDB [test036]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.025 sec)
MariaDB [test036]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.028 sec)
MariaDB [test036]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.025 sec)
MariaDB [test036]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)
MariaDB [test036]> INSERT INTO def (name1, name2) VALUES ("001", "002");
ERROR 1054 (42S22): Unknown column 'name1' in 'field list'
MariaDB [test036]> INSERT INTO def (name3, name4) VALUES ("001", "002");
Query OK, 1 row affected (0.029 sec)
MariaDB [test036]> INSERT INTO def (name4, name3) VALUES ("abc", "def");
Query OK, 1 row affected (0.037 sec)
MariaDB [test036]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001 | 001 |
| 001 | 002 |
| 002 | 001 |
| 002 | 002 |
+-------+-------+
4 rows in set (0.001 sec)
MariaDB [test036]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001 | 001 |
| 001 | 002 |
| def | abc |
+-------+-------+
3 rows in set (0.001 sec)
MariaDB [test036]> SELECT * FROM abc JOIN defM
-> ;
ERROR 1146 (42S02): Table 'test036.defM' doesn't exist
MariaDB [test036]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001 | 001 | 001 | 001 |
| 001 | 001 | 001 | 002 |
| 001 | 001 | def | abc |
| 001 | 002 | 001 | 001 |
| 001 | 002 | 001 | 002 |
| 001 | 002 | def | abc |
| 002 | 001 | 001 | 001 |
| 002 | 001 | 001 | 002 |
| 002 | 001 | def | abc |
| 002 | 002 | 001 | 001 |
| 002 | 002 | 001 | 002 |
| 002 | 002 | def | abc |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)
MariaDB [test036]> 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 [test036]> 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 | def | abc |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)
MariaDB [test036]> 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 [test036]> quit
Bye
david@intel-compute-stick:/var/www/html/035$
