title: Automatically insert timestamp if there isn't any in the table
body: <p>I have a table where I have a long list of timestamps and there could be chances of timestamps missing for an entire day or days and I want to insert a single timestamp for that particular day </p>
  
  <p>For example if there is no timestamp for 2014-04-04 I want it to insert 2014-04-04 00:00:00 for that particular day. </p>
  
  <p>Can this be done in mysql ?</p>