ADJUST/EDIT SQL QUERY ASSISTANCE - sql

Question

I have the below query which calculates from the first requested date to first completed date how much time elapsed.
However in the example below there is a requested date of 2017-02-02 (backdated) which was created on the 2017-02-06.
I want to edit the query to select the requested date and calculate how much time elapsed until completed from the FIRST CREATED DATE
So right now it returns 1 when it should be 0
Reasoning, because first created date is 2017-02-03 and it was requested and completed on the same day 2017-02-03
Any help is appreciated greatly!
CREATE TABLE #temp
(Identifier VARCHAR(40) NOT NULL,
Created_Date DATETIME NOT NULL,
Requested_Date DATETIME NOT NULL,
Completed_Date DATETIME NULL,
SN_Type VARCHAR(20) NOT NULL,
SN_Status VARCHAR(20) NOT NULL
);
INSERT INTO #temp
VALUES
('11111',
'20170203',
'20170203',
'20170203',
'Re-Activattion',
'COMP'
);
INSERT INTO #temp
VALUES
('11111',
'20170206',
'20170202',
NULL,
'Re-Activattion',
'N-CO'
);
SELECT *
FROM #temp;
-- calculate/identify Order start and Order End records
WITH cte
AS (
-- 1st Order start record i.e. earliest record in the table for a given "Identifier"
SELECT Identifier,
MIN(Created_Date) AS Created_Date,
CONVERT(VARCHAR(30), 'Created') AS RecordType,
1 AS OrderNumber
FROM #temp
GROUP BY Identifier
UNION ALL
-- All records with "COMP" status are treated as order completed events. Add 2 weeks to the completed date to create a "dummy" Order End Date
SELECT Identifier,
DATEADD(WEEK, 2, Created_Date) AS Created_Date,
'Completed' AS RecordType,
ROW_NUMBER() OVER(PARTITION BY Identifier ORDER BY Created_Date) AS OrderNumber
FROM #temp
WHERE SN_STATUS = 'COMP'
UNION ALL
-- Set the start period of the next order to be right after (3 ms) the previous Order End Date
SELECT Identifier,
DATEADD(ms, 3, DATEADD(WEEK, 2, Created_Date)) AS Created_Date,
'Created' AS RecordType,
ROW_NUMBER() OVER(PARTITION BY Identifier ORDER BY Created_Date) + 1 AS OrderNumber
FROM #temp
WHERE SN_STATUS = 'COMP'),
-- Combine Start / End records into one record
OrderGroups
AS (
SELECT Identifier,
OrderNumber,
MIN(Created_Date) AS OrderRangeStartDate,
MAX(Created_Date) AS OrderRangeEndDate
FROM cte
GROUP BY Identifier,
OrderNumber)
SELECT a.Identifier,
a.OrderNumber,
OrderRangeStartDate,
OrderRangeEndDate,
CASE
WHEN SUM(CASE
WHEN SN_STATUS = 'COMP'
AND SN_TYPE = 'Re-Activattion'
THEN 1
ELSE 0
END) > 0
THEN STR(DATEDIFF(day, MIN(CASE
WHEN SN_TYPE = 'Re-Activattion'
THEN Requested_Date
ELSE NULL
END), MIN(CASE
WHEN(SN_TYPE = 'Re-Activattion'
AND SN_STATUS = 'COMP')
THEN Completed_Date
ELSE NULL
END)))
WHEN SUM(CASE
WHEN SN_TYPE = 'Re-Activattion'
THEN 1
ELSE 0
END) > 0
THEN 'NOT COMP'
ELSE 'NO RE-ACT'
END AS RE_ACT_COMPLETION_TIME,
SUM(CASE
WHEN SN_STATUS = 'N-CO'
THEN 1
ELSE 0
END) AS [RE-AN NCO #]
FROM OrderGroups AS a
INNER JOIN #Temp AS b ON a.Identifier = b.Identifier
AND a.OrderRangeStartDate <= b.Created_Date
AND b.Created_Date <= a.OrderRangeEndDate
GROUP BY a.Identifier,
a.OrderNumber,
OrderRangeStartDate,
OrderRangeEndDate;

Answer 1

I want to edit the query to select the requested date and calculate
how much time elapsed until completed from the FIRST CREATED DATE
Change this:
,MIN(case
when SN_TYPE = 'Re-Activattion'
then Requested_Date
else null
end
To this:
,MIN(case
when SN_TYPE = 'Re-Activattion'
then Created_Date
else null
end