pqxx::result res( t.exec("SELECT * FROM bigscreen.active_groups") );
for (pqxx::result::const_iterator i = res.begin(); i != res.end(); ++i) {
pqxx::result res( t.exec("SELECT * FROM bigscreen.active_groups") );
for (pqxx::result::const_iterator i = res.begin(); i != res.end(); ++i) {