title: Changing data type from date to date/time in mysql?
body: <p>I am using mysql Db. I having a field like current_date in date data type. I have thousands of data right now.</p>
  
  <p>Now I want to capture the time of the current_date field. So now I am going to change the data type from date to date/time.</p>
  
  <p>Is this cause any problem to do this?
  Suppose I changed, what about the old records?</p>