@AccessControl.authorizationCheck: #NOT_REQUIRED
@EndUserText.label: 'Station energy totals'
define view entity {{P}}I_STATION_ENERGY
  as select from {{p}}station as st
    left outer join {{p}}session as se on se.station_id = st.station_id and se.status = 'C'
{
  key st.station_id as station_id,
      st.city as city,
      count( se.session_id ) as session_count,
      sum( se.energy_kwh ) as total_energy
}
group by
  st.station_id,
  st.city