sql query count failed sessions per user and 7 day period.


I need to count the  failed sessions per CustomerName for this week or 7 day period.

Customer table.
DeviceId, Custname,,,,,,,,,,,,

session table
Sessions_Id, DeviceId, on_date_time, Off_Date_Time, Complete,,,,,,,,,,,,,

if complete is false the count it.

output should for be distinct   " custname   -  'Number of false completes""
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This should work:
SELECT C.DeviceID, C.Custname, COUNT(*)
FROM Customer C INNER JOIN session S
ON C.DeviceID = S.DeviceID AND S.Complete = FALSE
GROUP BY C.DeviceID, C.Custname

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I have included DeviceID in case you have two customers with the same name
While custname might not be unique, a customer might use more than one device, so I've not included deviceid. Heer's a 7 day period approach.
      , COUNT(*)
FROM Customer C
INNER JOIN session S
        ON C.DeviceID = S.DeviceID AND S.Complete = FALSE

WHERE on_date_time >= DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), -7) -- 7 day period


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Microsoft SQL Server 2005

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