Estou assumindo que
(patient_id, adherence_date, scheduled_time) é único na sua mesa, o que significa que um paciente pode marcar uma vez por "vaga" e data. with medication_adherences as(
-- This is your test data
select 10049 as patient_id, 1 as id, date '2017-10-01' as adherence_date, 'morning' as scheduled_time, timestamp '2017-10-31 19:59:19' as acknowledged_at from dual union all
select 10049 as patient_id, 2 as id, date '2017-10-01' as adherence_date, 'afternoon' as scheduled_time, null as acknowledged_at from dual union all
select 10049 as patient_id, 3 as id, date '2017-10-01' as adherence_date, 'night' as scheduled_time, timestamp '2017-10-31 19:59:19' as acknowledged_at from dual union all
select 10049 as patient_id, 4 as id, date '2017-10-02' as adherence_date, 'morning' as scheduled_time, timestamp '2017-10-31 19:59:19' as acknowledged_at from dual union all
select 10049 as patient_id, 5 as id, date '2017-10-02' as adherence_date, 'afternoon' as scheduled_time, timestamp '2017-10-31 19:59:19' as acknowledged_at from dual union all
select 10049 as patient_id, 6 as id, date '2017-10-02' as adherence_date, 'evening' as scheduled_time, timestamp '2017-10-31 19:59:19' as acknowledged_at from dual union all
select 10049 as patient_id, 7 as id, date '2017-10-02' as adherence_date, 'night' as scheduled_time, null as acknowledged_at from dual
)
select adherence_date
,sum(case when scheduled_time = 'morning' then nvl2(acknowledged_at,1,0) end) as morning
,sum(case when scheduled_time = 'afternoon' then nvl2(acknowledged_at,1,0) end) as afternoon
,sum(case when scheduled_time = 'evening' then nvl2(acknowledged_at,1,0) end) as evening
,sum(case when scheduled_time = 'night' then nvl2(acknowledged_at,1,0) end) as night
from medication_adherences
where patient_id = 10049
group
by adherence_date;
A lógica funciona assim:
- se reconhecido_at for nulo, agregamos 0 (via nvl2)
- se reconhecido_at for não null então agregamos 1 (via nvl2)
- se não houver registro para este intervalo de tempo, agregamos nulo (desde o caso quando ... falhou)
