MySQL DATETIME - Change only the date

Question

Starting with : 2011-01-17 09:30:00

Let\'s say I want to edit just the date with 2011-01-28

What is the most efficient way to end up with: 2011-01-28 09:30:0

Answer 1

To change it 5 days ahead:

UPDATE yourTableName
SET myDate1 = myDate1 + INTERVAL 5 DAY
WHERE myDate1 = dateIWantToChange

(you can use MONTH, YEAR, etc too)