Issue #2833060 by claudiu.cristea, matroskeen, heddn, dww, benjifisher,...

Issue #2833060 by claudiu.cristea, matroskeen, heddn, dww, benjifisher, alexpott, xurizaemon, liam morland, quietone, mikeryan, mikelutz, pfrenssen: SqlBase::prepareQuery() should be called also on count