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Find average subscription time (calculate dates)

Posted on 2013-11-14
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352 Views
Last Modified: 2013-11-15
Hi!

I have a table called "tblUserLog" that contains information about deleted users:

---------------------
tblUserLog
---------------------
UserName (varchar)
CreateDate (datetime)
LogDate (datetime)
SiteId (smallint)

I need to create a Stored Procedure that returns the average time between CreateDate (user registration) and LogDate (user deleted) where  SiteId = '2' and CreateDate > '2013-01-01'.

I need this to find out how many days an average users is registered. Hope someone please can help me solving this :)

Thanks!
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Question by:webressurs
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3 Comments
 
LVL 32

Assisted Solution

by:awking00
awking00 earned 100 total points
ID: 39648756
select avg(timediff) as avgtime from
(select datediff('dd',createdate, logdate) as timediff
 from yourtable
 where siteid = '2' and createdate > '2013-01-01') as x
0
 
LVL 11

Accepted Solution

by:
jasonduan earned 400 total points
ID: 39648766
Try this:

SELECT AVG(DATEDIFF(DAY, CreateDate, LogDate))
FROM tblUserLog
where  SiteId = '2' and CreateDate > '2013-01-01'
0
 
LVL 1

Author Closing Comment

by:webressurs
ID: 39650837
Thanks!!

Jasonduan code worked perfect!

Awking00 code needed a tiny adjustment:

select avg(timediff) as avgtime from
(select datediff(day,createdate, logdate) as timediff
 from yourtable
 where siteid = '2' and createdate > '2013-01-01') as x
0

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