mysql实例 日期变量的二个例子

1，mysql日期变量的实例代码。

mysql>
mysql> delimiter $$
mysql>
mysql> CREATE PROCEDURE myProc() //创建日期存储过程
    -> BEGIN
    ->     DECLARE my_dob         DATE
    ->             DEFAULT '1982-06-21'; /* My Birthday */
    ->
    ->     select my_dob;
    -> END$$
Query OK, 0 rows affected (0.00 sec)

mysql> delimiter ;
mysql>
mysql> call myProc();
+------------+
| my_dob     |
+------------+
| 1960-06-21 |
+------------+
1 row in set (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

mysql>
mysql> drop procedure myProc;
Query OK, 0 rows affected (0.02 sec)

2，创建默认日期 DATE DEFAULT '2008-12-31'

mysql> delimiter $$
mysql>
mysql> CREATE PROCEDURE myProc() //存储过程 指定默认日期
    -> BEGIN
    ->      DECLARE l_date DATE DEFAULT '2008-12-31';
    ->
    ->     select l_date;
    -> END$$
Query OK, 0 rows affected (0.00 sec)

mysql> delimiter ;
mysql>
mysql> call myProc(); //调用存储过程
+------------+
| l_date     |
+------------+
| 2008-12-31 |
+------------+
1 row in set (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

mysql>
mysql> drop procedure myProc; //删除存储过程
Query OK, 0 rows affected (0.00 sec)