SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Identifier ver
    Function max (alias ver_max) (children 1)
     ExpressionList (children 1)
      Identifier ver
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 2)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Literal UInt64_1 (alias ver)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Literal UInt64_2 (alias ver)
   ExpressionList (children 1)
    Identifier ver
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ver
