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how to calculate Average Time Duration


how to calculate Average Time Duration

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suresh0534
suresh0534
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Hi,

I am counting values from database like

Total Calls Made:0:53:29 , Total Calls Received:0:11:25 , Total Call Duration:1:4:54

Total Calls Made:43 , Total Calls Received:5 , Total Call Duration:1:4:54

here how to calculate Average Time Duration:

Total Time Duration / (Total Calls Made + Total Calls Received)
(1995 +20214) / (43+5 )

How can we calculate the Average time(In hrs:mm:ss)

How can we calculate the Average time.

Thanks
Luis Cazares
Luis Cazares
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Your formula seems correct but you don't have number or calls made or received, instead you have duration of them. Check your data and post again.:-)


Luis C.
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Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?


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fahey.jonathan
fahey.jonathan
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To calculate "average duration", convert the duration for each record to milliseconds, then average the number of milliseconds for the group. Once you have that, then add that to a "zero" date and format it as time. In this example, the average milliseconds is the "12345" value:
SELECT CONVERT(VARCHAR(12), DATEADD(MILLISECOND, 12345, 0), 14) AS Duration

Duration
------------
00:00:12:347



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