@AccessControl.authorizationCheck: #NOT_REQUIRED
@EndUserText.label: 'Blood donation totals'
define view entity {{P}}I_BLOOD_STOCK
  as select from {{p}}donat as donation
    inner join   {{p}}camp  as site on site.camp_id = donation.camp_id
{
  key site.camp_id                                       as camp_id,
      site.city                                          as city,
      count( * )                                         as dona_count,
      sum( cast( donation.vol_ml as abap.dec( 15, 0 ) ) ) as total_volume
}
where donation.vol_ml > 0
group by site.camp_id, site.city
having count( * ) >= 3