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Last value entered based on last modified date


Last value entered based on last modified date

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Adelphi
Adelphi
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Group: General Forum Members
Points: 19 Visits: 66
I need to get the last modified value for each project and each owner

-- SAMPLE DATA
DECLARE @Audit TABLE (
[ID] varchar(50),
[Owner] varchar(50),
[Modified on] datetime,
[Value] money
)

SET DATEFORMAT dmy

INSERT INTO @Audit
SELECT 'ProjA','OwnerA','20/05/2011 17:45','1256'
UNION ALL SELECT 'ProjA','OwnerA','11/07/2011 16:22','2540'
UNION ALL SELECT 'ProjB','OwnerB','21/06/2011 09:32','25610'
UNION ALL SELECT 'ProjB','OwnerB','21/06/2011 09:37','30000'
UNION ALL SELECT 'ProjB','OwnerB','21/06/2011 09:40','45000';

-- SOLUTION
WITH AuditData AS (
SELECT *,
RN = ROW_NUMBER() OVER(PARTITION BY ID ORDER BY [Modified On] DESC),
max([Modified on]) OVER(PARTITION BY ID) AS [Max Modified On]
FROM @Audit
)
SELECT [ID], [Owner], [Modified on], [Value], [Max Modified On]
FROM AuditData AS AD

I need the following result:

[ID], [Owner], [Modified on], [Value], [Max Modified On]
ProjA OwnerA 2011-07-11 16:22:00.000 2540.00 2011-07-11 16:22:00.000
ProjB OwnerB 2011-06-21 09:40:00.000 45000.00 2011-06-21 09:40:00.000

Instead I get the following:

ProjA OwnerA 2011-05-20 17:45:00.000 1256.00 2011-07-11 16:22:00.000
ProjA OwnerA 2011-07-11 16:22:00.000 2540.00 2011-07-11 16:22:00.000
ProjB OwnerB 2011-06-21 09:32:00.000 25610.00 2011-06-21 09:40:00.000
ProjB OwnerB 2011-06-21 09:37:00.000 30000.00 2011-06-21 09:40:00.000
ProjB OwnerB 2011-06-21 09:40:00.000 45000.00 2011-06-21 09:40:00.000


What am I doing wrong?

Your help is appreciated.

Many Thanks

A
Koen Verbeeck
Koen Verbeeck
SSC Guru
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Group: General Forum Members
Points: 62276 Visits: 13298

WITH AuditData AS (
SELECT *,
RN = ROW_NUMBER() OVER(PARTITION BY ID ORDER BY [Modified On] DESC),
max([Modified on]) OVER(PARTITION BY ID) AS [Max Modified On]
FROM @Audit
)
SELECT [ID], [Owner], [Modified on], [Value], [Max Modified On]
FROM AuditData AS AD
WHERE RN = 1;




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Phil Parkin
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Group: General Forum Members
Points: 51408 Visits: 21157
Or this maybe:

with MaxDates as (select id, MaxMod = max([Modified on]) from @Audit a group by id)
select a.id,a.Owner, a.[Modified on],a.Value
from @Audit a
join MaxDates m on a.id = m.id and a.[Modified on] = m.MaxMod




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