Use the function TIMEDIFF: : TIMEDIFF « Date Time « SQL / MySQL

1. SQL / MySQL
2. Date Time
3. TIMEDIFF

Use the function TIMEDIFF:

   
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,
    -> TIMEDIFF(endtime, begintime) AS s
    -> FROM mytable;
+------------+----------+
| dt         | s        |
+------------+----------+
| 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)

mysql>

   
    
    
  

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