SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Identifier v
    Function length (children 1)
     ExpressionList (children 1)
      Function finalizeAggregation (children 1)
       ExpressionList (children 1)
        Function CAST (children 1)
         ExpressionList (children 2)
          Function unhex (children 1)
           ExpressionList (children 1)
            Identifier state
          Literal \'AggregateFunction(argMax, String, UInt64)\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier argmaxstate_hex_small
