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Qt读取数据库的速度是否比C#慢？我想我错过了什么!为了比较我在Qt中写下的阅读速度

QElapsedTimer t;
t.start();
int count = 0;
QString cs = "Driver={SQL Server}; Server=EMON;Database=FAODB;User=Test;Password=Test";
QSqlDatabase db = QSqlDatabase::addDatabase("QODBC",cs);
db.setDatabaseName(cs);
db.open();
QSqlQuery query(db);
query.setForwardOnly(true);
query.exec("SELECT * FROM FAOCropsLivestock");
while(query.next()){
    if(query.value("Country").toString() == "\"Bangladesh\"")
        count++;
}
db.close();
qDebug()<< QString::number(count) + " elapsed ms " + QString::number(t.elapsed());

并在C#

Stopwatch s = new Stopwatch();
s.Start();
int count = 0;
string cs = ConfigurationManager.ConnectionStrings["DB"].ConnectionString;
string query = "SELECT * FROM FAOCropsLivestock";
using(SqlConnection con = new SqlConnection(cs)){
      using(SqlCommand cmd = new SqlCommand(query, con)){
            con.Open();
            SqlDataReader rd = …