#include <QCoreApplication>
#include <QSqlDatabase>int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);    
      QSqlDatabase db;
    db = QSqlDatabase::addDatabase("QSQLITE", "x");   
      qInfo() << QSqlDatabase::connectionNames();
    qInfo() << db;
    QSqlDatabase::removeDatabase("x");
    qInfo() << QSqlDatabase::connectionNames();    
      return a.exec();
}
  

QList("x")
QSqlDatabase(driver="QSQLITE", database="", host="", port=-1, user="", open=false)
qt.sql.qsqldatabase: QSqlDatabasePrivate::removeDatabase: connection 'x' is still in use, all queries will cease to work.
QList()