February 5, 2014 at 4:55 pm
I need help to write a query like below oupt put.
create table #table (id int, cid int , startdate datetime)
insert #table
select 1, 100, '02/23/2014'
union select 1, 100, '06/25/2013'
union select 1, 100, '06/04/2013'
union select 1, 100, '06/17/2013'
union select 2, 200, '08/9/2013'
union select 2, 200, '08/3/2013'
First date 02/23/2014...So heere I need only the 2013 Current End dates Based On Start Date...
I need oupt put like below table based on above table.
id cid start_date end_date
1 100 02/23/2014 --
1 100 06/25/2013 12/31/2013
1 100 06/04/2013 06/24/2013
1 100 06/17/2013 06/03/2013
2 200 08/9/2013 12/31/2013
2 200 08/03/2013 08/08/2013
Thanks,
February 5, 2014 at 5:02 pm
I think there is a problem with your sample data.
There is at least one end date that occurs prior to the start date for the associated record.
Additionally, since the end dates are inconsistent in duration from the start, the query would be to write a query with those dates as static values.
Otherwise, you should be recording the end dates in a table along with the start date.
Jason...AKA CirqueDeSQLeil
_______________________________________________
I have given a name to my pain...MCM SQL Server, MVP
SQL RNNR
Posting Performance Based Questions - Gail Shaw[/url]
Learn Extended Events
February 5, 2014 at 5:09 pm
Thanks for your reply,
But there is no end date....I need to calculate the End date based on Start Date.
Example I am calculating the 2013 year Data.
If Start date date 2014 year , but we need to calculate only 2013 date..so there is no end date for 2014 Year.
I taken Start Date is Order By Desc.....for Highest Date it needs to calculate the Year End Date (12/31/2013).
Below is The Sample Out Put Based On Start Date..need to Calculate The End Date
id cid start_date end_date
1 100 02/23/2014 --
1 100 06/25/2013 12/31/2013
1 100 06/04/2013 06/24/2013
1 100 06/17/2013 06/03/2013
2 200 08/9/2013 12/31/2013
2 200 08/03/2013 08/08/2013
February 5, 2014 at 5:15 pm
suresh0534 (2/5/2014)
Thanks for your reply,But there is no end date....I need to calculate the End date based on Start Date.
Example I am calculating the 2013 year Data.
If Start date date 2014 year , but we need to calculate only 2013 date..so there is no end date for 2014 Year.
I taken Start Date is Order By Desc.....for Highest Date it needs to calculate the Year End Date (12/31/2013).
Below is The Sample Out Put Based On Start Date..need to Calculate The End Date
id cid start_date end_date
1 100 02/23/2014 --
1 100 06/25/2013 12/31/2013
1 100 06/04/2013 06/24/2013
1 100 06/17/2013 06/03/2013
2 200 08/9/2013 12/31/2013
2 200 08/03/2013 08/08/2013
Your end dates make no common sense.
You have multiple End dates that are end of year. Based on your statement that the highest start date should be the end of the year for the end date, we have a conflict there.
Then you have the bolded start and end date where the end date is prior to your start date.
Then you have some end dates that are 20 days from start date and some that are just 5 days from the start date.
Are you trying to say that an end date just goes to the next start date in sequence? Well if so, then we still have a conflict in your sample data in that that sequence is still not consistent.
We still need to have a more precise and clear set of rules to follow. We need to have a better set of data.
Jason...AKA CirqueDeSQLeil
_______________________________________________
I have given a name to my pain...MCM SQL Server, MVP
SQL RNNR
Posting Performance Based Questions - Gail Shaw[/url]
Learn Extended Events
February 5, 2014 at 5:19 pm
I agree that your expected results are wrong because you have an enddate greater than the startdate and that will generate a problem in the next row (rows 3 & 4).
This might give you an idea of what you need to solve your problem, even if I don't understand your "First Date" parameter.
WITH CTE AS(
SELECT *,
ROW_NUMBER() OVER( PARTITION BY id, YEAR(StartDate) ORDER BY startdate) rn,
YEAR(StartDate) DateYear
FROM #table
)
SELECT c1.id,
c1.cid,
c1.startdate,
ISNULL( c2.startdate - 1, CASE WHEN DATEADD(YEAR, DATEDIFF(YEAR, 0, c1.startdate) + 1, 0) < GETDATE()
THEN DATEADD(YEAR, DATEDIFF(YEAR, 0, c1.startdate) + 1, 0) END)
FROM CTE c1
LEFT
JOIN CTE c2 ON c1.DateYear = c2.DateYear
AND c1.id = c2.id
AND c1.rn = c2.rn - 1
ORDER BY c1.id, c1.startdate DESC
EDIT: Code Formatting.
February 5, 2014 at 5:36 pm
Luis Cazares (2/5/2014)
I agree that your expected results are wrong because you have an enddate greater than the startdate and that will generate a problem in the next row (rows 3 & 4).This might give you an idea of what you need to solve your problem, even if I don't understand your "First Date" parameter.
WITH CTE AS(
SELECT *,
ROW_NUMBER() OVER( PARTITION BY id, YEAR(StartDate) ORDER BY startdate) rn,
YEAR(StartDate) DateYear
FROM #table
)
SELECT c1.id,
c1.cid,
c1.startdate,
ISNULL( c2.startdate - 1, CASE WHEN DATEADD(YEAR, DATEDIFF(YEAR, 0, c1.startdate) + 1, 0) < GETDATE()
THEN DATEADD(YEAR, DATEDIFF(YEAR, 0, c1.startdate) + 1, 0) END)
FROM CTE c1
LEFT
JOIN CTE c2 ON c1.DateYear = c2.DateYear
AND c1.id = c2.id
AND c1.rn = c2.rn - 1
ORDER BY c1.id, c1.startdate DESC
EDIT: Code Formatting.
Slight tweak to this solution by Louis (good job)
WITH CTE AS(
SELECT *,
ROW_NUMBER() OVER( PARTITION BY id, YEAR(StartDate) ORDER BY startdate) rn,
YEAR(StartDate) DateYear
FROM #table
)
SELECT c1.id,
c1.cid,
c1.startdate,
ISNULL( c2.startdate - 1, CASE WHEN DATEADD(YEAR, DATEDIFF(YEAR, 0, c1.startdate) + 1, -1) < GETDATE()
THEN DATEADD(YEAR, DATEDIFF(YEAR, 0, c1.startdate) + 1, -1) END) AS ENDDate
FROM CTE c1
LEFT OUTER JOIN CTE c2
ON c1.DateYear = c2.DateYear
AND c1.id = c2.id
AND c1.rn = c2.rn - 1
ORDER BY c1.id, c1.startdate DESC
Jason...AKA CirqueDeSQLeil
_______________________________________________
I have given a name to my pain...MCM SQL Server, MVP
SQL RNNR
Posting Performance Based Questions - Gail Shaw[/url]
Learn Extended Events
February 5, 2014 at 5:48 pm
I agree that your expected results don't match your sample data. But I think you're looking for something like this:
SELECT id, cid, startdate=MIN(d)
, enddate=CASE
WHEN DATEPART(year, MIN(d)) = DATEPART(year, GETDATE()) THEN NULL
WHEN DATEPART(year, MAX(d)) = DATEPART(year, MIN(d)) AND MAX(d) <> MIN(d) THEN MAX(d)
ELSE DATEADD(year, 1, DATEADD(year, DATEDIFF(year, 0, MIN(d)), 0))-1 END
FROM
(
SELECT id, cid, startdate, d
,rn=ROW_NUMBER() OVER (PARTITION BY id, cid ORDER BY d)/2
FROM #table
CROSS APPLY
(
VALUES (startdate),(startdate-1)
) b (d)
) a
WHERE rn > 0
GROUP BY id, cid, rn;
Output from your sample data:
id cid startdate enddate
1 100 2013-06-04 00:00:00.000 2013-06-16 00:00:00.000
1 100 2013-06-17 00:00:00.000 2013-06-24 00:00:00.000
1 100 2013-06-25 00:00:00.000 2013-12-31 00:00:00.000
1 100 2014-02-23 00:00:00.000 NULL
2 200 2013-08-03 00:00:00.000 2013-08-08 00:00:00.000
2 200 2013-08-09 00:00:00.000 2013-12-31 00:00:00.000
My thought question: Have you ever been told that your query runs too fast?
My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.
Need to UNPIVOT? Why not CROSS APPLY VALUES instead?[/url]
Since random numbers are too important to be left to chance, let's generate some![/url]
Learn to understand recursive CTEs by example.[/url]
[url url=http://www.sqlservercentral.com/articles/St
February 5, 2014 at 5:55 pm
dwain.c (2/5/2014)
I agree that your expected results don't match your sample data. But I think you're looking for something like this:
SELECT id, cid, startdate=MIN(d)
, enddate=CASE
WHEN DATEPART(year, MIN(d)) = DATEPART(year, GETDATE()) THEN NULL
WHEN DATEPART(year, MAX(d)) = DATEPART(year, MIN(d)) AND MAX(d) <> MIN(d) THEN MAX(d)
ELSE DATEADD(year, 1, DATEADD(year, DATEDIFF(year, 0, MIN(d)), 0))-1 END
FROM
(
SELECT id, cid, startdate, d
,rn=ROW_NUMBER() OVER (PARTITION BY id, cid ORDER BY d)/2
FROM #table
CROSS APPLY
(
VALUES (startdate),(startdate-1)
) b (d)
) a
WHERE rn > 0
GROUP BY id, cid, rn;
Output from your sample data:
id cid startdate enddate
1 100 2013-06-04 00:00:00.000 2013-06-16 00:00:00.000
1 100 2013-06-17 00:00:00.000 2013-06-24 00:00:00.000
1 100 2013-06-25 00:00:00.000 2013-12-31 00:00:00.000
1 100 2014-02-23 00:00:00.000 NULL
2 200 2013-08-03 00:00:00.000 2013-08-08 00:00:00.000
2 200 2013-08-09 00:00:00.000 2013-12-31 00:00:00.000
Nice solution. I saw the results before the edit to fix the end dates - way to get that fixed quickly 😉
IMHO, I don't see why the start date of 6/25 would not have an end date of 8/2 instead of 12/31. That just makes more sense to me.
Jason...AKA CirqueDeSQLeil
_______________________________________________
I have given a name to my pain...MCM SQL Server, MVP
SQL RNNR
Posting Performance Based Questions - Gail Shaw[/url]
Learn Extended Events
February 5, 2014 at 6:02 pm
SQLRNNR (2/5/2014)
IMHO, I don't see why the start date of 6/25 would not have an end date of 8/2 instead of 12/31. That just makes more sense to me.
Agreed that was a pretty weird requirement. My code makes the assumption that the end date has to be in the same year as the start date. No telling if that is true or not but the sample data seemed to suggest it.
My thought question: Have you ever been told that your query runs too fast?
My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.
Need to UNPIVOT? Why not CROSS APPLY VALUES instead?[/url]
Since random numbers are too important to be left to chance, let's generate some![/url]
Learn to understand recursive CTEs by example.[/url]
[url url=http://www.sqlservercentral.com/articles/St
February 5, 2014 at 8:12 pm
SQLRNNR (2/5/2014)
Nice solution.
Actually, I am not too proud to admit that solution stunk up the house! Not sure what I was thinking there.
This will be much faster, assuming a PRIMARY KEY consisting of id, cid and startdate of course.
SELECT id, cid, StartDate
,EndDate=CASE
WHEN DATEPART(year, StartDate) = DATEPART(year, GETDATE()) THEN NULL
WHEN DATEPART(year, EndDate) = DATEPART(year, StartDate) AND EndDate <> StartDate THEN EndDate
ELSE DATEADD(year, 1, DATEADD(year, DATEDIFF(year, 0, StartDate), 0))-1
END
FROM #table a
OUTER APPLY
(
SELECT TOP 1 StartDate-1
FROM #table b
WHERE a.id = b.id AND a.cid = b.cid AND a.startdate < b.startdate
ORDER BY b.startdate
) b(EndDate)
ORDER BY id, cid, StartDate;
My thought question: Have you ever been told that your query runs too fast?
My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.
Need to UNPIVOT? Why not CROSS APPLY VALUES instead?[/url]
Since random numbers are too important to be left to chance, let's generate some![/url]
Learn to understand recursive CTEs by example.[/url]
[url url=http://www.sqlservercentral.com/articles/St
February 5, 2014 at 8:18 pm
dwain.c (2/5/2014)
SQLRNNR (2/5/2014)
Nice solution.Actually, I am not too proud to admit that solution stunk up the house! Not sure what I was thinking there.
Well, it worked with limited information. Besides, tuning the query could have been a good exercise for the OP.
Jason...AKA CirqueDeSQLeil
_______________________________________________
I have given a name to my pain...MCM SQL Server, MVP
SQL RNNR
Posting Performance Based Questions - Gail Shaw[/url]
Learn Extended Events
February 6, 2014 at 2:39 pm
Thank you so much...it help me lot....
Big thankful to all the members....
Thanks,
February 6, 2014 at 2:53 pm
Good to hear. Glad there was some great stuff that worked for you on this thread.
Jason...AKA CirqueDeSQLeil
_______________________________________________
I have given a name to my pain...MCM SQL Server, MVP
SQL RNNR
Posting Performance Based Questions - Gail Shaw[/url]
Learn Extended Events
February 6, 2014 at 5:23 pm
suresh0534 (2/6/2014)
Thank you so much...it help me lot....Big thankful to all the members....
Thanks,
I'm glad to hear it helped too. It got me to thinking that this is sort of a common problem and what kinds of business cases need the support of this kind of query.
Too bad you're not using SQL 2012. The LEAD function there is your ticket to the fastest possible solution.
My thought question: Have you ever been told that your query runs too fast?
My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.
Need to UNPIVOT? Why not CROSS APPLY VALUES instead?[/url]
Since random numbers are too important to be left to chance, let's generate some![/url]
Learn to understand recursive CTEs by example.[/url]
[url url=http://www.sqlservercentral.com/articles/St
February 7, 2014 at 4:25 pm
One More Small Issue can you help...
create table #table (id int, cid int , startdate datetime)
insert #table
select 1, 100, '02/23/2014'
union select 1, 100, '06/25/2013'
union select 1, 100, '06/04/2013'
union select 1, 100, '06/17/2013'
union select 2, 200, '08/9/2013'
union select 2, 200, '08/3/2013'
union select 4, 600, '06/11/2013'
union select 4, 600, '06/18/2013'
union select 4, 600, '06/17/2013'
union select 4, 600, '09/17/2013'
union select 4, 600, '01/20/2014'
union select 4, 600, '01/24/2014'
SELECT id, cid, StartDate
,EndDate=CASE
WHEN DATEPART(year, StartDate) = DATEPART(year, GETDATE()) THEN NULL
WHEN DATEPART(year, EndDate) = DATEPART(year, StartDate) AND EndDate <> StartDate THEN EndDate
ELSE DATEADD(year, 1, DATEADD(year, DATEDIFF(year, 0, StartDate), 0))-1
END
FROM #table a
OUTER APPLY
(
SELECT TOP 1 StartDate-1
FROM #table b
WHERE a.id = b.id AND a.cid = b.cid AND a.startdate < b.startdate
ORDER BY b.startdate
) b(EndDate)
ORDER BY id, cid, StartDate;
idcidStartDateEndDate
11002013-06-04 00:00:00.0002013-06-16 00:00:00.000
11002013-06-17 00:00:00.0002013-06-24 00:00:00.000
11002013-06-25 00:00:00.0002013-12-31 00:00:00.000
11002014-02-23 00:00:00.000NULL
22002013-08-03 00:00:00.0002013-08-08 00:00:00.000
22002013-08-09 00:00:00.0002013-12-31 00:00:00.000
46002013-06-11 00:00:00.0002013-06-16 00:00:00.000
46002013-06-17 00:00:00.0002013-12-31 00:00:00.000 --This End Date should Come 2013-06-17 But it showing 2013 12-31
46002013-06-18 00:00:00.0002013-09-16 00:00:00.000
46002013-09-17 00:00:00.0002013-12-31 00:00:00.000
46002014-01-20 00:00:00.000NULL
46002014-01-24 00:00:00.000NULL
Remaining Data Every Thing Perfect...only that one has Issue...
Thanks,
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