SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Function map (children 1)
       ExpressionList (children 2)
        Literal UInt64_1
        Function assumeNotNull (children 1)
         ExpressionList (children 1)
          Function materialize (children 1)
           ExpressionList (children 1)
            Literal NULL
