"WHERE userid = :userid AND bufferid IN (:buffer1, :buffer2)");
checkQuery.bindValue(":userid", user.toInt());
checkQuery.bindValue(":buffer1", bufferId1.toInt());
"WHERE userid = :userid AND bufferid IN (:buffer1, :buffer2)");
checkQuery.bindValue(":userid", user.toInt());
checkQuery.bindValue(":buffer1", bufferId1.toInt());