Connecting Local MSSQL DB With QtSQL

[UmeyrMSekban]

I have a local MSSQL Server on my computer and a local database located in my C drive under MSSQL. I'm trying to connect to that database using Qt Creator but I get "unable to open database file Error opening database" message.

#include <QtSql>
#include <QApplication>
#include <QtDebug>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QString servername = "DESKTOP-05C2T53\\SEKBANSQL"; //Server name that shows up when I start MSSQL Server Management
    
    QString dbname = "my_db_name";

    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE"); //Not sure what to put between quotes here to make it work

    db.setConnectOptions();

    QString dsn = QString("DRIVER={SQL Native Client};SERVER=%1;DATABASE=%2;Trusted_Connection=Yes;").arg(servername).arg(dbname);

    db.setDatabaseName(dsn);

    if(db.open()){

        qDebug() << "Opened";
        db.close();
    }
    else{
        qDebug() << "Error = " << db.lastError().text();
    }

    return a.exec();
}

I don't have QODBC on my computer and I'm just trying to connect locally

[JonB]

@UmeyrMSekban
I assume you need QODBC for MS SQL Server, certainly it's not QSQLITE.

[UmeyrMSekban]

@JonB
I've checked and saw ODBC is installed but when I change db to QODBC it fails to connect.
I've been trying to setup ODBC to to make it work on QODBC but I don't understand what needs to be changed

[piervalli]

@UmeyrMSekban
Usually I use only a standard connection string, try with this

        //Driver={SQL Server Native Client 11.0};Server=myServerAddress;Database=myDataBase;Uid=myUsername;Pwd=myPassword;
        
        m_database = QSqlDatabase::addDatabase("QODBC", connectionName);

        QString dns = QString("Driver={SQL Server Native Client 11.0};Server=%1;Database=%4;Uid=%2;Pwd=%3;")
                .arg(m_host,m_userName,m_password, m_nameDB);
        qDebug() << "ODBC connection string" << dns << "driver";
        m_database.setDatabaseName(dns);
        stato =  m_database.open();
        if(!stato){
            qCritical() << m_database.lastError().text()  <<  QSqlDatabase::drivers();
        }