title: How to call MySQL function from Spring Data repositories
body: <p>I need to call MySQL <code>funtion()</code> from a <code>org.springframework.data.repository</code> which will return a <code>String</code>.</p>
  
  <p>I am able to execute query using <code>@Query</code> annotation on top of my interface method declaration, but i have no idea to call a function.</p>