void OpenDB()
{
	Sqlite3Session &sql_session = Single<Sqlite3Session>();
#ifdef _DEBUG
	sql_session.LogErrors(true);
#endif
	if(!sql_session.Open(ConfigFile("data.db"))) {
		LOG("Can't create or open database file\n");
		return;
	}
	
	// This is global:
	SQL = sql_session;
}

void CloseDB()
{
	Single<Sqlite3Session>().Close();
}

	Sql sql;
	sql * Select(SqlAll()).From(SOME_TABLE);
	while(sql.Fetch()){
		//Do something
		Value some_field = sql[SOME_FIELD];
	}