Complicated query involving res - sql

Question

I have the table as below and I need to have the query how many tasks created for the day and how many are resolved and I need to capture the Tasks which are passed from previous day with active status. Ex: TaskId 101 is created on 11/10/2014 and it is resolved on 11/12/2014 so it should show in the count of 11/11/2014 and 11/12/2014 also.
TaskId CreateDate Status ResolvedDate
101 11/10/2014 Resolved 11/12/2014
102 11/10/2014 Resolved 11/10/2014
103 11/11/2014 Active NULL
104 11/11/2014 Resolved 11/13/2014
105 11/13/2014 Active 11/13/2014
Please help me as I am not able to think of any solution. Sorry I was trying to post the table schema in table format but not able to create table and I am new to this forum.

Answer 1

#radar, You just gave me the hope with the query and I have changed the query as below and it started showing result. But the TotalActive showing less value than TotalCreated.
declare #start_date datetime = getdate()-30
declare #end_date datetime = getdate()
;WITH CTE AS
(
SELECT #start_date AS date
UNION ALL
SELECT DATEADD(day, 1, date) as date
FROM CTE
WHERE DATEADD(day, 1, date) <= #end_date
)
select cte.date,
sum( case when CONVERT(varchar, CreateDate, 101) <= CONVERT(varchar, cte.date, 101) and CONVERT(varchar, cte.date, 101) <= CONVERT(varchar, ResolveDate, 101) then 1 else 0 end
) as TotalActive,
sum( case when CONVERT(varchar, cte.date, 101) = CONVERT(varchar, CreateDate, 101) then 1 else 0 end
) as TotalCreated,
sum( case when CONVERT(varchar, cte.date, 101) = CONVERT(varchar, ResolveDate, 101) then 1 else 0 end
) as TotalResolved
from cte
left join [WarehouseIncidents] T
ON CONVERT(varchar, CreateDate, 101) >= CONVERT(varchar, cte.date, 101)
GROUP BY CTE.DATE

Answer 2

you can get the result using case based aggregation
The CTE generates list of dates for a given range.
For each day, total active ( created that day and created previously but not resolved) and total resolved that day are calculated using case, max and group by
declare #start_date datetime = '2014-11-10'
declare #end_date datetime ='2014-11-13'
;WITH CTE AS
(
SELECT #start_date AS date
UNION ALL
SELECT DATEADD(day, 1, date) as date
FROM CTE
WHERE DATEADD(day, 1, date) <= #end_date
)
select cte.date,
sum( case when createDate <= cte.date and ( resolveddate is null or ResolvedDate >= cte.date) then 1 else 0 end
) as TotalActive,
sum( case when cte.date = ResolvedDate then 1 else 0 end
) as TotalResolved
from cte
left join Table1 T
ON T.createDate <= cte.date
GROUP BY CTE.DATE