Devcodpanda · May 25, 2020 14:27 · May 25, 2020
diff --git a/SQL - Atelier - Kaamelott b/SQL - Atelier - Kaamelott
@@ -0,0 +1,139 @@
+➜  ~ git:(master) ✗ mysql -u root -p
+Enter password: 
+Welcome to the MySQL monitor.  Commands end with ; or \g.
+…
+mysql> CREATE DATABASE kaamelott;
+…
+mysql> USE kaamelott;
+Database changed
+mysql> CREATE TABLE knight ( id INT PRIMARY KEY NOT NULL AUTO_INCREMENT,
+    -> name VARCHAR(80) NOT NULL,
+    -> age INT NOT NULL);
+Query OK, 0 rows affected (0.03 sec)
+
+mysql> INSERT INTO knight (name, age) VALUES ('Arthur', 40), ('Perceval', 35), ('Lancelot', 38);
+Query OK, 3 rows affected (0.01 sec)
+Records: 3  Duplicates: 0  Warnings: 0
+
+mysql> DESCRIBE knight;
++-------+-------------+------+-----+---------+----------------+
+| Field | Type        | Null | Key | Default | Extra          |
++-------+-------------+------+-----+---------+----------------+
+| id    | int         | NO   | PRI | NULL    | auto_increment |
+| name  | varchar(80) | NO   |     | NULL    |                |
+| age   | int         | NO   |     | NULL    |                |
++-------+-------------+------+-----+---------+----------------+
+3 rows in set (0.01 sec)
+
+mysql> SELECT * FROM knight;
++----+----------+-----+
+| id | name     | age |
++----+----------+-----+
+|  1 | Arthur   |  40 |
+|  2 | Perceval |  35 |
+|  3 | Lancelot |  38 |
++----+----------+-----+
+3 rows in set (0.00 sec)
+
+mysql> UPDATE knight SET age = 36 WHERE id = 2;
+Query OK, 1 row affected (0.00 sec)
+Rows matched: 1  Changed: 1  Warnings: 0
+
+mysql> SELECT * FROM knight;
++----+----------+-----+
+| id | name     | age |
++----+----------+-----+
+|  1 | Arthur   |  40 |
+|  2 | Perceval |  36 |
+|  3 | Lancelot |  38 |
++----+----------+-----+
+3 rows in set (0.00 sec)
+
+mysql> SELECT * FROM knight WHERE age > 37 ;
++----+----------+-----+
+| id | name     | age |
++----+----------+-----+
+|  1 | Arthur   |  40 |
+|  3 | Lancelot |  38 |
++----+----------+-----+
+2 rows in set (0.00 sec)
+
+mysql> ALTER TABLE knight ADD is_dubbed BOOLEAN;
+Query OK, 0 rows affected (0.02 sec)
+Records: 0  Duplicates: 0  Warnings: 0
+
+mysql> DESCRIBE knight;
+  +-----------+-------------+------+-----+---------+----------------+
+| Field     | Type        | Null | Key | Default | Extra          |
++-----------+-------------+------+-----+---------+----------------+
+| id        | int         | NO   | PRI | NULL    | auto_increment |
+| name      | varchar(80) | NO   |     | NULL    |                |
+| age       | int         | NO   |     | NULL    |                |
+| is_dubbed | tinyint(1)  | YES  |     | NULL    |                |
++-----------+-------------+------+-----+---------+----------------+
+4 rows in set (0.00 sec)
+
+mysql> UPDATE knight SET is_dubbed = true;
+Query OK, 3 rows affected (0.00 sec)
+Rows matched: 3  Changed: 3  Warnings: 0
+
+mysql> SELECT * FROM knight;
++----+----------+-----+-----------+
+| id | name     | age | is_dubbed |
++----+----------+-----+-----------+
+|  1 | Arthur   |  40 |         1 |
+|  2 | Perceval |  36 |         1 |
+|  3 | Lancelot |  38 |         1 |
++----+----------+-----+-----------+
+3 rows in set (0.00 sec)
+
+mysql> UPDATE knight SET is_dubbed = false WHERE name = 'Perceval';
+Query OK, 1 row affected (0.00 sec)
+Rows matched: 1  Changed: 1  Warnings: 0
+
+mysql> SELECT * FROM knight
+    -> ;
++----+----------+-----+-----------+
+| id | name     | age | is_dubbed |
++----+----------+-----+-----------+
+|  1 | Arthur   |  40 |         1 |
+|  2 | Perceval |  36 |         0 |
+|  3 | Lancelot |  38 |         1 |
++----+----------+-----+-----------+
+3 rows in set (0.00 sec)
+
+mysql> DELETE FROM knight WHERE name = 'Lancelot';
+Query OK, 1 row affected (0.00 sec)
+
+mysql> SELECT * FROM knight
+    -> ;
++----+----------+-----+-----------+
+| id | name     | age | is_dubbed |
++----+----------+-----+-----------+
+|  1 | Arthur   |  40 |         1 |
+|  2 | Perceval |  36 |         0 |
++----+----------+-----+-----------+
+2 rows in set (0.00 sec)
+
+mysql> TRUNCATE TABLE knight;
+Query OK, 0 rows affected (0.01 sec)
+
+mysql> SELECT * FROM knight;
+Empty set (0.00 sec)
+
+mysql> DROP TABLE knight;
+Query OK, 0 rows affected (0.01 sec)
+
+mysql> CREATE TABLE weapon ( id INT PRIMARY KEY NOT NULL AUTO_INCREMENT, name VARCHAR(50));
+Query OK, 0 rows affected (0.01 sec)
+
+mysql> DESCRIBE weapon;
++-------+-------------+------+-----+---------+----------------+
+| Field | Type        | Null | Key | Default | Extra          |
++-------+-------------+------+-----+---------+----------------+
+| id    | int         | NO   | PRI | NULL    | auto_increment |
+| name  | varchar(50) | YES  |     | NULL    |                |
++-------+-------------+------+-----+---------+----------------+
+2 rows in set (0.00 sec)
+
+.. .. ..