SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function hex (children 1)
     ExpressionList (children 1)
      Function toString (children 1)
       ExpressionList (children 1)
        Function uniqStateForEachState (children 1)
         ExpressionList (children 1)
          Literal Array_[UInt64_1, NULL]
