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

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 -.