SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function first_value_respect_nullsMerge (children 1)
     ExpressionList (children 1)
      Function CAST (children 1)
       ExpressionList (children 2)
        Function unhex (children 1)
         ExpressionList (children 1)
          Literal \'00\'
        Literal \'AggregateFunction(any_respect_nulls, UInt64)\'
