SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function reverse (children 1)
     ExpressionList (children 1)
      Function toString (children 1)
       ExpressionList (children 1)
        Function round (children 1)
         ExpressionList (children 1)
          Function exp10 (children 1)
           ExpressionList (children 1)
            Identifier number
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_10