SQL Clone
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 


CTE to find average


CTE to find average

Author
Message
sharonsql2013
sharonsql2013
Mr or Mrs. 500
Mr or Mrs. 500 (586 reputation)Mr or Mrs. 500 (586 reputation)Mr or Mrs. 500 (586 reputation)Mr or Mrs. 500 (586 reputation)Mr or Mrs. 500 (586 reputation)Mr or Mrs. 500 (586 reputation)Mr or Mrs. 500 (586 reputation)Mr or Mrs. 500 (586 reputation)

Group: General Forum Members
Points: 586 Visits: 1265
I am trying to get the average for number of Ids per day

But , some how I get "0".
Can anyone suggest

With CTE1
As
(
SELECT
count([ID]) as No_OF_IDS,
Days

FROM [Proddata]
LEFT OUTER JOIN SupplyData as S ON Proddata.Group = S.Group
GroupBy Days
)

Select Sum(ISNULL(No_of_IDS,0))/Sum(ISNULL(Days,0))
from CTE1
pietlinden
pietlinden
SSCarpal Tunnel
SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)

Group: General Forum Members
Points: 4803 Visits: 13143
How about:

SELECT x.Days, AVG(x.No_Of_IDs) As AvgCount
FROM
( SELECT Days,
count([ID]) as No_OF_IDS
FROM [Proddata]
LEFT OUTER JOIN SupplyData as S ON Proddata.Group = S.Group
GroupBy Days
) x
GROUP BY x.Days;

No CTE required.
twin.devil
twin.devil
SSCrazy
SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)SSCrazy (2.3K reputation)

Group: General Forum Members
Points: 2340 Visits: 2666
sharonsql2013 (12/6/2013)
I am trying to get the average for number of Ids per day

But , some how I get "0".
Can anyone suggest


It giving zero because there might be not data matching against the join you are using, try to change the query to the inner join to check if there any results you find, 2ndly there is not need to CTE, desire result can be achieve through a simple query.
Go


Permissions

You can't post new topics.
You can't post topic replies.
You can't post new polls.
You can't post replies to polls.
You can't edit your own topics.
You can't delete your own topics.
You can't edit other topics.
You can't delete other topics.
You can't edit your own posts.
You can't edit other posts.
You can't delete your own posts.
You can't delete other posts.
You can't post events.
You can't edit your own events.
You can't edit other events.
You can't delete your own events.
You can't delete other events.
You can't send private messages.
You can't send emails.
You can read topics.
You can't vote in polls.
You can't upload attachments.
You can download attachments.
You can't post HTML code.
You can't edit HTML code.
You can't post IFCode.
You can't post JavaScript.
You can post emoticons.
You can't post or upload images.

Select a forum

































































































































































SQLServerCentral


Search