Calculating Intervals Between Times : INTERVAL « Date Time « SQL / MySQL





Calculating Intervals Between Times

     
mysql>
mysql>
mysql> CREATE TABLE time_val
    -> (
    ->  t1      TIME,
    ->  t2      TIME
    -> );
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql> INSERT INTO time_val (t1,t2) VALUES('15:00:00','15:00:00');
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO time_val (t1,t2) VALUES('05:01:30','02:30:20');
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO time_val (t1,t2) VALUES('12:30:20','17:30:45');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> SELECT * FROM time_val;
+----------+----------+
| t1       | t2       |
+----------+----------+
| 15:00:00 | 15:00:00 |
| 05:01:30 | 02:30:20 |
| 12:30:20 | 17:30:45 |
+----------+----------+
3 rows in set (0.00 sec)

mysql>
mysql>
mysql> SELECT t1, t2,
    -> TIME_TO_SEC(t2) - TIME_TO_SEC(t1) AS 'interval in seconds',
    -> SEC_TO_TIME(TIME_TO_SEC(t2) - TIME_TO_SEC(t1)) AS 'interval as TIME'
    -> FROM time_val;
+----------+----------+---------------------+------------------+
| t1       | t2       | interval in seconds | interval as TIME |
+----------+----------+---------------------+------------------+
| 15:00:00 | 15:00:00 |                   0 | 00:00:00         |
| 05:01:30 | 02:30:20 |               -9070 | -02:31:10        |
| 12:30:20 | 17:30:45 |               18025 | 05:00:25         |
+----------+----------+---------------------+------------------+
3 rows in set (0.00 sec)

mysql>
mysql> drop table time_val;
Query OK, 0 rows affected (0.00 sec)

   
    
    
    
    
  










Related examples in the same category

1.The INTERVAL() function compares the first integer listed as an argument to the integers that follow the first
2.The INTERVAL clause requires an , which must be a time value in an acceptable format, and a value.
3.Adding a Temporal Interval to a Time
4.Literal for timestamp type column
5.Some interval specifiers comprise both date and time parts.
6.Use the + and - operators to perform date interval addition and subtraction
7.Add date with interval
8.Get the date seven days after the payment date.
9.Add 7 day interval to a date
10.Add Month and day to a date
11.Add hour, seconds and microseconds to Date
12.Add one day to the date literal '2004-13-12'; next show the error messages.
13.To convert the interval from seconds to other units, perform the appropriate division