SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function concat (children 1)
       ExpressionList (children 3)
        Literal \'third\'
        Literal \'first\'
        Literal \'second\'
      Function format (children 1)
       ExpressionList (children 4)
        Literal \'{2}{0}{1}\'
        Literal \'first\'
        Literal \'second\'
        Literal \'third\'