Calculate Total Time Duration and Add Time in MySQL

To calculate the total time duration in MySQL, you need to use SEC_TO_TIME(). Let us see an example by creating a table

mysql> create table AddTotalTimeDemo
   - > (
   - > Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   - > LoginTime time
   - > );
Query OK, 0 rows affected (0.63 sec)

Insert some records in the table using insert command.

The query is as follows

mysql> insert into AddTotalTimeDemo(LoginTime) values('05:05:00');
Query OK, 1 row affected (0.10 sec)
mysql> insert into AddTotalTimeDemo(LoginTime) values('07:20:00');
Query OK, 1 row affected (0.16 sec)
mysql> insert into AddTotalTimeDemo(LoginTime) values('02:05:00');
Query OK, 1 row affected (0.17 sec)
mysql> insert into AddTotalTimeDemo(LoginTime) values('03:03:00');
Query OK, 1 row affected (0.25 sec)
mysql> insert into AddTotalTimeDemo(LoginTime) values('05:07:00');
Query OK, 1 row affected (0.11 sec)

Display all records from the table using select statement.

The query is as follows

mysql> select *from AddTotalTimeDemo;

The following is the output

+----+-----------+
| Id | LoginTime |
+----+-----------+
|  1 | 05:05:00  |
|  2 | 07:20:00  |
|  3 | 02:05:00  |
|  4 | 03:03:00  |
|  5 | 05:07:00  |
+----+-----------+
5 rows in set (0.00 sec)

The following is the query to calculate the total time duration in MySQL

mysql> SELECT SEC_TO_TIME(SUM(TIME_TO_SEC(LoginTime))) AS TotalTime from AddTotalTimeDemo;

The following is the output

+-----------+
| TotalTime |
+-----------+
| 22:40:00  |
+-----------+
1 row in set (0.00 sec)