mysql>
mysql> delimiter $$
mysql>
mysql> CREATE PROCEDURE myProc()
-> BEGIN
->
-> DECLARE TwentyYearsAgoToday DATE;
-> DECLARE mystring VARCHAR(250);
->
-> SET TwentyYearsAgoToday=DATE_SUB(curdate(), interval 20 year);
->
-> SET mystring=CONCAT('It was ',TwentyYearsAgoToday,' ...');
->
-> SELECT mystring;
->
-> END$$
Query OK, 0 rows affected (0.00 sec)
mysql> delimiter ;
mysql>
mysql> call myProc();
+-----------------------+
| mystring |
+-----------------------+
| It was 1987-07-23 ... |
+-----------------------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.02 sec)
mysql> drop procedure myProc;
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql>