How to sum time in MySQL by converting into seconds?

To convert time to seconds, use the TIME_TO_SEC() method. Let us first create a table −

mysql> create table DemoTable    -> (    -> ArrivalTime time    -> ); Query OK, 0 rows affected (0.63 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('04:10:00'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('05:20:50'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('06:40:10'); Query OK, 1 row affected (0.18 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

Output

+-------------+ | ArrivalTime | +-------------+ | 04:10:00 | | 05:20:50 | | 06:40:10 | +-------------+ 3 rows in set (0.00 sec)

Following is the query to calculate the sum of time in MySQL −

mysql> select SEC_TO_TIME( SUM( TIME_TO_SEC( ArrivalTime) ) ) from DemoTable;

Output

+-------------------------------------------------+ | SEC_TO_TIME( SUM( TIME_TO_SEC( ArrivalTime) ) ) | +-------------------------------------------------+ | 16:11:00 | +-------------------------------------------------+ 1 row in set (0.00 sec)