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

If you really don't want to use date_add function, you can consider using this construction:

UPDATE table_name SET field_name = concat('2011-01-12 ', time(field_name)) 

Make sure to add a space after the date ('2011-01-12◯').