mysql>
mysql>
mysql> CREATE TABLE mytable (
-> id INT AUTO_INCREMENT,
-> begintime DATETIME,
-> endtime DATETIME,
-> PRIMARY KEY (id)
-> );
Query OK, 0 rows affected (0.01 sec)
mysql>
mysql> INSERT INTO mytable (begintime, endtime) VALUES
-> ('2005-03-27 7:15', '2005-03-27 18:00'),
-> ('2005-03-28 8:00', '2005-03-28 18:00'),
-> ('2005-03-29 7:30', '2005-03-29 16:50'),
-> ('2005-03-30 7:00', '2005-03-30 17:15');
Query OK, 4 rows affected (0.00 sec)
Records: 4 Duplicates: 0 Warnings: 0
mysql>
mysql>
mysql> SELECT DATE_FORMAT(begintime, '%Y-%m-%d') AS dt,
-> SEC_TO_TIME(UNIX_TIMESTAMP(endtime) - UNIX_TIMESTAMP(begintime)) AS t
-> FROM mytable;
+------------+----------+
| dt | t |
+------------+----------+
| 2005-03-27 | 10:45:00 |
| 2005-03-28 | 10:00:00 |
| 2005-03-29 | 09:20:00 |
| 2005-03-30 | 10:15:00 |
+------------+----------+
4 rows in set (0.00 sec)
mysql>
mysql>
mysql>
mysql> drop table mytable;
Query OK, 0 rows affected (0.00 sec)