Hi,
I installed Qt5 on my RaspberryPi (Rasbian Jessie) using:

sudo apt-get install qt5-default
sudo apt-get install libqt5svg5*
sudo apt-get install qttools5-dev

When I tried to compile and execute a tiný program to access a MySQL database using:

QString dbname;
dbname = "QtTestDB";

QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
db.setDatabaseName(dbname);
db.setUserName("root");
db.setHostName("localhost");
db.setPort(3306);
db.setPassword("raspberry");

if(!db.open()) {
ui->textEdit->setText("not open !");
}

I got the message:

QSqlDatabase: QMYSQL driver not loaded
QSqlDatabase: available drivers: QSQLITE
QSqlQuery::exec: database not open

The same program worked fine on QT4

It looks as if there is no MySQL Support for Qt5 on the system.
Does anybody know how to fix this?

Thank you!