Oracle OCCI'选择计数（*）'结果提取

Question

如何才能实现查询执行结果 - select count (*) from myTable？ 的代码是：

... 
oc::Statement* stmt = 
    m_cConnection->createStatement(select count (*) from myTable); 

oc::ResultSet* res = stmt->executeQuery(); 
... 

我怎样才能获得行计数的res价值？

Answer 1

只要写

cout << res->getString(1) << endl; 

或

cout << "\t... MySQL counts: " << res->getInt(1) << endl;