SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function array (children 1)
     ExpressionList (children 1)
      Function array (children 1)
       ExpressionList (children 1)
        Function array (children 1)
         ExpressionList (children 2)
          Function array (children 1)
           ExpressionList
          Literal Array_[\'\']