SELECT
  PT.PresentationID,
  PT.ProspectID,
  PS.ProspectName,
  PT.AttendanceDate,
  PT.AttendanceTime,
  PT.ConsultantID,
  PT.Duration,
  PT.CalendarID,
  PT.OutlookCalendar,
  PT.OutlookEventID
FROM
  taPresentation AS PT
    LEFT JOIN taProspect AS PS USING (ProspectID)
WHERE
  (PT.PresentationID = @nPresentationID)
