@SuppressWarnings({"unchecked"})
 public String renderProjection(RenderingContext renderingContext) {
   // some drivers/servers do not like parameters in the select clause
   final ValueHandlerFactory.ValueHandler handler =
       ValueHandlerFactory.determineAppropriateHandler(literal.getClass());
   if (ValueHandlerFactory.isCharacter(literal)) {
     return '\'' + handler.render(literal) + '\'';
   } else {
     return handler.render(literal);
   }
 }