SQL/MySQL/Data Type/AUTO INCREMENT

Using AUTO_INCREMENT

/*
mysql> SELECT * FROM Employee;
+----+-------+
| id | name  |
+----+-------+
|  1 | Joe   |
|  2 | Yin   |
|  3 | peng  |
|  4 | Lava  |
|  5 | White |
|  6 | Ola   |
+----+-------+
6 rows in set (0.02 sec)
*/  
/* AUTO_INCREMENT : used to generate a unique identity for new rows:
  */
Drop table Employee;
CREATE TABLE Employee (
             id MEDIUMINT NOT NULL AUTO_INCREMENT,
             name CHAR(30) NOT NULL,
             PRIMARY KEY (id)
             );
             
INSERT INTO Employee (name) VALUES ("Joe"),
                                  ("Yin"),
                                  ("peng"),
                                  ("Lava"),
                                  ("White"),
                                  ("Ola");
SELECT * FROM Employee;