- Qt 5.5
- Qt SQL
- Master Detail Example
- database.h Example File
- Qt 5.5.1 Reference Documentation

# database.h Example File

masterdetail/database.h

    /****************************************************************************
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    ** This file is part of the examples of the Qt Toolkit.
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    #ifndef DATABASE_H
    #define DATABASE_H

    #include <QMessageBox>
    #include <QSqlDatabase>
    #include <QSqlError>
    #include <QSqlQuery>

    static bool createConnection()
    {
        QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
        db.setDatabaseName(":memory:");
        if (!db.open()) {
            QMessageBox::critical(0, qApp->tr("Cannot open database"),
                qApp->tr("Unable to establish a database connection.\n"
                         "This example needs SQLite support. Please read "
                         "the Qt SQL driver documentation for information how "
                         "to build it.\n\n"
                         "Click Cancel to exit."), QMessageBox::Cancel);
            return false;
        }

        QSqlQuery query;

        query.exec("create table artists (id int primary key, "
                                         "artist varchar(40), "
                                         "albumcount int)");

        query.exec("insert into artists values(0, '<all>', 0)");
        query.exec("insert into artists values(1, 'Ane Brun', 2)");
        query.exec("insert into artists values(2, 'Thomas Dybdahl', 3)");
        query.exec("insert into artists values(3, 'Kaizers Orchestra', 3)");

        query.exec("create table albums (albumid int primary key, "
                                         "title varchar(50), "
                                         "artistid int, "
                                         "year int)");

        query.exec("insert into albums values(1, 'Spending Time With Morgan', 1, "
                           "2003)");
        query.exec("insert into albums values(2, 'A Temporary Dive', 1, 2005)");
        query.exec("insert into albums values(3, '...The Great October Sound', 2, "
                           "2002)");
        query.exec("insert into albums values(4, 'Stray Dogs', 2, 2003)");
        query.exec("insert into albums values(5, "
            "'One day you`ll dance for me, New York City', 2, 2004)");
        query.exec("insert into albums values(6, 'Ompa Til Du D\xc3\xb8r', 3, 2001)");
        query.exec("insert into albums values(7, 'Evig Pint', 3, 2002)");
        query.exec("insert into albums values(8, 'Maestro', 3, 2005)");

        return true;
    }

    #endif