SQL - подзапрос подсчет

Question

Я начал следующий код

SELECT distinct crq_risk 
    ,count(crq_risk) as 'count' 
    ,( select count(datediff(day,submit_date,crq_scheduled_for_approval_date)) 
     from change_information 
     where crq_risk = 'Risk Level 1' 
      and submit_date >= '2016-05-01 00:00:00.000' 
      and crq_scheduled_for_approval_date IS NOT NULL 
      and crq_change_timing = 'Non Standard - Planned' 
      and datediff (day,submit_date,crq_scheduled_for_approval_date) < 10) as RL1 
    ,( select count(datediff(day,submit_date,crq_scheduled_for_approval_date)) 
     from change_information 
     where crq_risk = 'Risk Level 2' 
      and submit_date >= '2016-05-01 00:00:00.000' 
      and crq_scheduled_for_approval_date IS NOT NULL 
      and crq_change_timing = 'Non Standard - Planned' 
      and datediff (day,submit_date,crq_scheduled_for_approval_date) < 10) as RL2 
    ,( select count(datediff(day,submit_date,crq_scheduled_for_approval_date)) 
     from change_information 
     where crq_risk = 'Risk Level 3' 
      and submit_date >= '2016-05-01 00:00:00.000' 
      and crq_scheduled_for_approval_date IS NOT NULL 
      and crq_change_timing = 'Non Standard - Planned' 
      and datediff (day,submit_date,crq_scheduled_for_approval_date) < 5) as RL3 
    ,( select count(datediff(day,submit_date,crq_scheduled_for_approval_date)) 
     from change_information 
     where crq_risk = 'Risk Level 4' 
      and submit_date >= '2016-05-01 00:00:00.000' 
      and crq_scheduled_for_approval_date IS NOT NULL 
      and crq_change_timing = 'Non Standard - Planned' 
      and datediff (day,submit_date,crq_scheduled_for_approval_date) < 3) as RL4 
from change_information 
where submit_date >= '2016-05-01 00:00:00.000' 
    and crq_scheduled_for_approval_date IS NOT NULL 
    and crq_change_timing = 'Non Standard - Planned' 
group by crq_risk 

Это приводит к

crq_risk  count RL1 RL2 RL3 RL4 
Risk Level 1 0  0.00 7  69 101 
Risk Level 2 8  0.00 7  69 101 
Risk Level 3 183  0.00 7  69 101 
Risk Level 4 247  0.00 7  69 101 

whereas I want the table to look like this 

crq_risk  count edited_count 
Risk Level 1 0  0 
Risk Level 2 8  7 
Risk Level 3 183 69 
Risk Level 4 247 101 

Answer 1

Вы можете использовать sum() с case statement

SELECT distinct crq_risk 
    ,count(crq_risk) as 'count' 
    ,sum(case when ((crq_risk in ('Risk Level 1', 'Risk Level 2') and datediff (day,submit_date,crq_scheduled_for_approval_date) < 10) 
        or (crq_risk = 'Risk Level 3' and datediff (day,submit_date,crq_scheduled_for_approval_date) < 5) 
        or (crq_risk = 'Risk Level 4' and datediff (day,submit_date,crq_scheduled_for_approval_date) < 3)) 
      then 1 else 0 end 
     ) as edited_count 
from change_information 
where submit_date >= '2016-05-01 00:00:00.000' 
    and crq_scheduled_for_approval_date IS NOT NULL 
    and crq_change_timing = 'Non Standard - Planned' 
group by crq_risk;