MySql Connector/C++8結果集處理Demo

#include <iostream>
#include <exception>

#include <mysqlx/xdevapi.h>


using std::cout;
using std::endl;


int main(void)
try 
{
    //uri: mysqlx://user:password@host:port/db_name
    const char *from_uri = "mysqlx://root:mysql@localhost:33060/D_COMPANY?ssl-mode=disabled";
    mysqlx::Session sess(from_uri);

    mysqlx::SqlResult rset = sess.sql("SELECT * FROM T_DEPT").execute();

    mysqlx::Row row;
    while (rset.hasData()) { //判斷結果集中是否有數據
        row = rset.fetchOne(); //從結果集中提取一行數據，同時此函數會自動指向下一行數據
        if (row.isNull()) { //判斷此行是否爲空
            cout << "row is null." << endl;
            break;
        }

        //提取行中每一列的數據，注意下標從 0 開始
        //使用C++中的類的強制轉換
        cout << "  deptno: " << int(row.get(0)) << endl;
        cout << "deptname: " << std::string(row.get(1)) << endl;
        cout << " deptloc: " << std::string(row.get(2)) << endl;

#ifdef OTHER
        cout << "  deptno: " << row.get(0).get<int>() << endl;
        cout << "deptname: " << row.get(1).get<std::string>() << endl;
        cout << " deptloc: " << row.get(2).get<std::string>() << endl;
#endif 
    }

    sess.close();
    cout << "Done!" << endl;
}
catch (mysqlx::Error &err) 
{
    cout << "ERROR : " << err << endl;
    return -1;
}