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Cannot perform an aggregate function on an expression containing an aggregate or a subquery

Posted By:      Posted Date: September 23, 2010    Points: 0   Category :Sql Server

How do i get around this???



sum(PODet.UnitCost*ReceiverDet.Qty2Receive) as TotalCost


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SQL PROCEDURE cannot perform aggregate function on expression containing aggregate or subquery



I DID BELLOW CODE BUT GETTING ERROR AS cannot perform aggregate function on expression containing aggregate or subquery



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My values are like this

Item | VALUE








I am trying to bring the output. 


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Ganesh Ranganathan
[Please mark the post as answer if it answers your question]

Cannot find either Column "dbo" or the user-defined function or aggregate "dbo.GetCandiateID", or th



Good morning to everybody. I am not understanding why I am getting the following error (also mentioned in the subject line).

I have written the following function in SQL Server 2005:

    declare @candidate_id int
    SELECT @candidate_id = max(c.candidate_id) from dbo.candidates c
    if(@candidate_id is null)
        set @candidate_id = 1001
        set @candidate_id = @candidate_id + 1
    return @candidate_id

The function compiled properly. I have used the above function like below in the query:

select dbo.GetCandidateID()

I am getting the following error:

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can i create a Clr ud Aggregate Function with over/ order by clause?


i want create a UD Aggregate like  Row_Number () for using with 'Over (Order By ...) ' (not like sum() over (part....)

is it possible?

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Hi Folks
I have an aggregate transformation, that runs a count on a column.  The  column  has 23 rows  with dates and a further 2 rows that have no date information. When I run a count function on the column, it returns a count of 25.  My hypothesis is that  this is linked to the 2 rows are treated as being  BLANK as opposed to being NULL (I understand the COUNT function will not count rows that have null values).

I have two questions
1) How do test this hypothesis that he difference is due to a blank vs null issue and then more importantly
2) How to I resolve the issue so that the 2 "empty" rows are not counted?

Many thanks


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