MySQL add 12 hours to a time field

Question

I need to add 12 hours to a MySQL TIME field (not DATETIME) and I\'m having trouble.

UPDATE `events` 
SET start_time = DATE_ADD(sta         


        

Answer 1

set start_time = ADDTIME(start_time,'12:00:00')

DATE_ADD works fine with timestamp etc, but not with TIME

Answer 2

if the developer does not want to update data and wants to add hours or minutes to time. It can be done following way:

The developer can use an AddTime() function to add hours to time column in MySQL. It can be used like below way:

AddTime(COLUMN,’01:00:00′) to add an hour in MySQL time column
AddTime(COLUMN,’00:01:00′) to add a minute in MySQL time column

sql query example:

select id,name,AddTime(login_time,'01:00:00') as login_time FROM `table`

Answer 3

Try using ADDTIME instead of DATE_ADD. You could do SET start_time = ADDTIME(start_time, '12:00:00')

Answer 4

UPDATE `events` 
SET start_time = start_time + INTERVAL 12 HOUR
WHERE `start_time` < '11:00:00'

The MySQL functions that accept INTERVAL arguments are mostly unnecessary; you can just add and subtract intervals with + and -.

Answer 5

update my_table SET modified_date = ADDTIME(scheduled_date, '03:15:00') 

This will add 3 hours , 15 minutes in modified_date