title: SQL - insert real time in a database table
body: <p>I have a database and i need to create a table and insert in a column or columns the real time.</p>
  
  <p>i will explain what exactly i want so maybe you can help.</p>
  
  <p>I am making a game so i need with the pass of time a user to gain coins.
  For example if the real time is 12:00 am i want in 12:15 the users to gain 50 coins (so a variable inside the database will change automatically after the pass of time), then in 12:30 they gain 50 coins etc.
  and all that will happen even if they are online or offline. (i want database to work all time!)</p>