mysql> UPDATE school
    -> SET country='Sweden'
    -> WHERE id=3;
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> UPDATE school
    -> SET capacity=700
    -> WHERE id=7;
Query OK, 1 row affected (0.02 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> DELETE FROM school
    -> WHERE name LIKE '%magic%';
Query OK, 3 rows affected (0.01 sec)

mysql> SELECT * FROM school;
+----+----------------------------------------------+----------+----------------+
| id | name                                         | capacity | country        |
+----+----------------------------------------------+----------+----------------+
|  3 | Durmstrang Institute                         |      570 | Sweden         |
|  4 | Hogwarts School of Witchcraft and Wizardry   |      450 | United Kingdom |
|  5 | Ilvermorny School of Witchcraft and Wizardry |      300 | USA            |
|  6 | Koldovstoretz                                |      125 | Russia         |
|  9 | Castelobruxo                                 |      380 | Brazil         |
+----+----------------------------------------------+----------+----------------+
5 rows in set (0.00 sec)