auto database = QSqlDatabase::database(connectionName, false);

	// If the database claims to be open, check that the connection is valid; 
	// if not, close so it can be reopened
	if (database.isOpen())
	{
		auto testQuery = database.exec(QStringLiteral("SELECT 1 FROM RDB$DATABASE"));
		if (auto err = testQuery.lastError(); err.isValid())
		{
			qCDebug(lc) << "Existing connection is stale:" << err.text() << err.nativeErrorCode();
			database.close();
		}
	}

	if (!database.isOpen() && !database.open())
	{
		error = QStringLiteral("%1 (code %2)").arg(database.lastError().text(), database.lastError().nativeErrorCode());
	}