как открыть базу в QT созданную в MySQL workbench

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>
#include <QtSql/QSqlError>
#include <QtSql/QSqlRecord>
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
 
    db = QSqlDatabase::addDatabase("QMYSQL");
    db.setHostName("3306");
    db.setDatabaseName("new_schema");
    db.setUserName("root");
    db.setPassword("masterkey");
    if (!db.open()){
        qDebug() << db.lastError().text();
     }
    else {
        qDebug() << "Success!";
    }
}
 
MainWindow::~MainWindow()
{
    delete ui;
}

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QMainWindow>
#include <QtSql/QSqlDatabase>
#include <QtSql/QSqlQuery>
#include <QtSql/QSqlTableModel>
 
 
namespace Ui {
class MainWindow;
}
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
 
private:
    Ui::MainWindow *ui;
    QSqlDatabase db;
};
 
#endif // MAINWINDOW_H

QT       += core gui sql
 
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
TARGET = DatabaseTutorial
TEMPLATE = app
 
DEFINES += QT_DEPRECATED_WARNINGS
 
# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
 
SOURCES += main.cpp\
        mainwindow.cpp
 
HEADERS  += mainwindow.h
 
FORMS    += mainwindow.ui