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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//! [0]
Q3SqlCursor cur( "staff" ); // Specify the table/view name
cur.select(); // We'll retrieve every record
while ( cur.next() ) {
qDebug( cur.value( "id" ).toString() + ": " +
cur.value( "surname" ).toString() + ' ' +
cur.value( "salary" ).toString() );
}
//! [0]
//! [1]
Q3SqlCursor cur( "prices" );
cur.select( "id=202" );
if ( cur.next() ) {
QSqlRecord *buffer = cur.primeUpdate();
double price = buffer->value( "price" ).toDouble();
double newprice = price * 1.05;
buffer->setValue( "price", newprice );
cur.update();
}
//! [1]
//! [2]
Q3SqlCursor cur("Employee"); // Use the Employee table or view
cur.select("deptno=10"); // select all records in department 10
while(cur.next()) {
... // process data
}
...
// select records in other departments, ordered by department number
cur.select("deptno>10", cur.index("deptno"));
...
//! [2]
//! [3]
Q3SqlCursor cur("Employee");
cur.select("deptno=10"); // select all records in department 10
while(cur.next()) {
... // process data
}
...
cur.select(); // re-selects all records in department 10
...
//! [3]
//! [4]
Q3SqlCursor cur("Employee");
QSqlIndex pk = cur.primaryIndex();
cur.setValue("id", 10);
cur.select(pk, pk); // generates "SELECT ... FROM Employee WHERE id=10 ORDER BY id"
...
//! [4]
//! [5]
Q3SqlCursor cur("Employee");
cur.setMode(Q3SqlCursor::Writable); // allow insert/update/delete
...
cur.setMode(Q3SqlCursor::Insert | Q3SqlCursor::Update); // allow inserts and updates only
...
cur.setMode(Q3SqlCursor::ReadOnly); // no inserts/updates/deletes allowed
//! [5]
//! [6]
Q3SqlCursor cur("prices");
QSqlRecord *buffer = cur.primeInsert();
buffer->setValue("id", 53981);
buffer->setValue("name", "Thingy");
buffer->setValue("price", 105.75);
cur.insert();
//! [6]
//! [7]
Q3SqlCursor cur("prices");
cur.select("id=202");
if (cur.next()) {
QSqlRecord *buffer = cur.primeUpdate();
double price = buffer->value("price").toDouble();
double newprice = price * 1.05;
buffer->setValue("price", newprice);
cur.update();
}
//! [7]
//! [8]
Q3SqlCursor cur("prices");
cur.select("id=999");
if (cur.next()) {
cur.primeDelete();
cur.del();
}
//! [8]
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