Removing objects from memory - necessary?

[Tomasz]

Hello!

I've got function in which I've got something like that:

void MainWindow::myFunction()
{
[...]
 
bool ok;
    QTextStream out(stdout);
    QSqlRecord rec;
 
    QSqlDatabase bdb = QSqlDatabase::addDatabase("QSQLITE");
 
    bdb.setDatabaseName(databaseName);
    ok = bdb.open();
 
    if (ok)
    {
        out << endl << "Otworzylem baze!" << endl ;
    } else {
        out << "Nie udalo sie otworzyc bazy!" << endl;
    }
 
    QSqlQueryModel *queryModel = new QSqlQueryModel;
 
    queryModel->setQuery("SELECT * FROM config WHERE name='qt-notification-interval'", bdb);
 
    rec = queryModel->record(0);
    notificationInterval = (rec.value(1).toInt())*1000;
 
    out << notificationInterval << endl;
 
    bdb.close();
 
[...]
}

void MainWindow::myFunction()
{
[...]

bool ok;
    QTextStream out(stdout);
    QSqlRecord rec;

    QSqlDatabase bdb = QSqlDatabase::addDatabase("QSQLITE");

    bdb.setDatabaseName(databaseName);
    ok = bdb.open();

    if (ok)
    {
        out << endl << "Otworzylem baze!" << endl ;
    } else {
        out << "Nie udalo sie otworzyc bazy!" << endl;
    }

    QSqlQueryModel *queryModel = new QSqlQueryModel;

    queryModel->setQuery("SELECT * FROM config WHERE name='qt-notification-interval'", bdb);

    rec = queryModel->record(0);
    notificationInterval = (rec.value(1).toInt())*1000;

    out << notificationInterval << endl;

    bdb.close();

[...]
}

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I invoke this function many times. Is it necessary to remove somehow from memory queryModel? Or is it removed automatically after exiting function?

thanks in advance
best regards
Tomasz