Mega Code Archive
Verify the input parameter
<![CDATA[
mysql>
mysql> delimiter $$
mysql>
mysql> CREATE FUNCTION myFunction (in_string varchar(80) )
-> RETURNS VARCHAR(256)
-> NO SQL
-> BEGIN
-> DECLARE i INT DEFAULT 1;
-> DECLARE string_len INT;
-> DECLARE out_string VARCHAR(256) DEFAULT '';
->
-> SET string_len=length(in_string);
-> WHILE (i<string_len) DO
-> SET out_string=CONCAT(out_string,ASCII(substr(in_string,i,1)),' ');
-> SET i=i+1;
-> END WHILE;
-> RETURN (out_string);
->
-> END$$
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql> delimiter ;
mysql>
mysql> select myFunction('ABCDEFGHI');
+--------------------------+
| myFunction('ABCDEFGHI') |
+--------------------------+
| 65 66 67 68 69 70 71 72 |
+--------------------------+
1 row in set (0.00 sec)
mysql>
mysql> drop function myFunction;
Query OK, 0 rows affected (0.00 sec)
mysql>
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