How to batch update MySQL table?

Let us first create a table −

mysql> create table DemoTable
   -> (
   -> BreakfastTime time
   -> );
Query OK, 0 rows affected (0.59 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('7:30:45');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable values('8:00:30');
Query OK, 1 row affected (0.20 sec)
mysql> insert into DemoTable values('7:55:00');
Query OK, 1 row affected (0.10 sec)

Display all records from the table using select statement −

mysql> select * from DemoTable;

This will produce the following output −

+---------------+
| BreakfastTime |
+---------------+
| 07:30:45      |
| 08:00:30      |
| 07:55:00      |
+---------------+
3 rows in set (0.00 sec)

Following is the query to batch update MySQL table −

mysql> update DemoTable
   -> set BreakfastTime=addtime(BreakfastTime,'2:00:00');
Query OK, 3 rows affected (0.13 sec)
Rows matched: 3 Changed: 3 Warnings: 0

Let us check the table records once again −

mysql> select * from DemoTable;

This will produce the following output−

+---------------+
| BreakfastTime |
+---------------+
| 09:30:45      |
| 10:00:30      |
| 09:55:00      |
+---------------+
3 rows in set (0.00 sec)