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help with max and grouping

Author

Topic

dibblejon
Starting Member

36 Posts

Posted - 2012-07-24 : 11:03:28

Hi

I have a table that has info like:

account | date | reason

abc001 2012-07-01 00:00:00 1
abc001 2012-07-03 14:00:26 3
abc001 2012-07-06 14:00:00 2
sac870 2012-07-01 00:00:00 1
sac870 2012-07-23 00:00:00 2

I want to get results by using a max on the date and returning the reason associated with that group - so for the exanple above I just want to see - the oldest records grouped by account

abc001 2012-07-06 14:00:00 2
sac870 2012-07-23 00:00:00 2

Any help would be great

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2012-07-24 : 11:12:40

[code]
SELECT account,[date],reason
FROM
(
SELECT ROW_NUMBER() OVER (PARTITION BY account ORDER BY [date] DESC) AS Rn,*
FROM table
)t
WHERE rn=1
[/code]

if sql 2000 or before use
[code]
SELECT t.*
FROM table t
INNER JOIN (SELECT account,MAX([date]) AS MaxDate
FROM table
GROUP BY account
)t1
ON t1.account = t.account
AND t1.MaxDate = t.[date]
[/code]

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

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