/**************************************************************************** ** ** Copyright (C) 2009 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]