Hello
why get me this error about connection to SQL
my Code:

http://doc.qt.io/qt-4.8/QSqlDatabase db=QSqlDatabase::addDatabase(QODBC);

Errror

http://doc.qt.io/qt-4.8/D:\QtSDK\QtCreator\bin\Project7000\example\DBApp-build-desktop-Qt_4_8_0_for_Desktop_-_MinGW__Qt_SDK__Debug\..\DBApp\main.cpp:10: error: 'QODBC' was not declared in this scope