|
mysql>
mysql> delimiter $$
mysql>
mysql> CREATE FUNCTION myFunction(in_status CHAR(1))
-> RETURNS VARCHAR(20)
-> BEGIN
-> IF in_status = 'O' THEN
-> RETURN('Overdue');
-> ELSEIF in_status = 'U' THEN
-> RETURN('Up to date');
-> ELSEIF in_status = 'N' THEN
-> RETURN('New');
-> END IF;
-> END$$
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql> delimiter ;
mysql>
mysql> select myFunction('O');
+-----------------+
| myFunction('O') |
+-----------------+
| Overdue |
+-----------------+
1 row in set (0.00 sec)
mysql>
mysql> select myFunction('U');
+-----------------+
| myFunction('U') |
+-----------------+
| Up to date |
+-----------------+
1 row in set (0.00 sec)
mysql>
mysql> select myFunction('N');
+-----------------+
| myFunction('N') |
+-----------------+
| New |
+-----------------+
1 row in set (0.00 sec)
mysql>
mysql>
mysql> drop function myFunction;
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql>
|