Confused about count function

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Home » SQL Server 2008 » T-SQL (SS2K8) » Confused about count function

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Confused about count function

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Posted Tuesday, December 04, 2012 10:02 AM

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Last Login: Thursday, June 13, 2013 1:20 PM
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Hello,

I can't wrap my head around what the below query does when it includes a having count(*) > 1 and used with the group by? Can someone please help me understand this?

SELECT
RxNbr,
RefillNo
FROM
dbo.POSRx AS pr
WHERE
DateFilledSK >= 20120901
AND Void = 0
GROUP BY
RxNbr,
RefillNo
HAVING
COUNT(*) > 1

Thanks,

Sean

Post #1392597

Posted Tuesday, December 04, 2012 10:18 AM

SSC Eights!

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Last Login: 2 days ago @ 4:48 PM
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It's looking for duplicates. It will only show rows where there is more than 1 instance of the combination of columns in the 'group by'.

And then again, I might be wrong ...
David Webb

Post #1392605

Posted Tuesday, December 04, 2012 10:28 AM

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Thank you David!

Post #1392615

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