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QT += sql

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#include <QCoreApplication>
#include <QSqlDatabase>
#include <QSqlQuery>
#include <QDebug>

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

    QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");

    db.setHostName("localhost");
    db.setDatabaseName("your_database_name");
    db.setUserName("your_username");
    db.setPassword("your_password");

    if (db.open()) {
        qDebug() << "Database connected!";
    } else {
        qDebug() << "Failed to connect to database!";
    }

    db.close();

    return a.exec();
}

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²Î¿¼´úÂ룺https://github.com/qt/qtbase/tree/dev/examples/sql

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