Question

I have a Timestamp columnn in a MySQL table. The default value of this column is CURRENT_TIMESTAMP, I want to make the ON UPDATE property of this column also equal to CURRENT_TIMESTAMP without having to drop and re-add the column, as this would cause me to lose all of the data.

Is this possible?

Answer 1

You ought to be able to do this successfully with an ALTER statement:

ALTER TABLE yourtable
  MODIFY the_timestamp_column TIMESTAMP
     DEFAULT CURRENT_TIMESTAMP 
     ON UPDATE CURRENT_TIMESTAMP;

It works correctly in my quick testing.