SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Function array (children 1)
       ExpressionList (children 1)
        Function assumeNotNull (children 1)
         ExpressionList (children 1)
          Function materialize (children 1)
           ExpressionList (children 1)
            Literal NULL
