Can Anyone Help Me With A Nested Count??

Jul 24, 2007

Hi All,



I am trying to do a nested count and cannot seem to get it to work. I do realize I cannot do this within the expression so I have been trying to use the code block (report > report properties > code tab) to do this and I have zero experience with VB.



This is for a PO delivery report. The first expression is just counting how many lines on an individual PO are late divided by total number of lines on the PO. In second expression I would like to count how many POs that have a late line on it.




Here is what I have so far.



Expression 1 with count function (this work properly):
=iif(Fields!DS_Desired_Recv_Date.Value is nothing,
((Count(IIF(Fields!LAST_RECEIVED_DATE.Value > Fields!DESIRED_RECV_DATE.Value,1,Nothing))/Count(Fields!LINE_NO.Value))),
((Count(IIF(Fields!ACTUAL_RECV_DATE.Value > Fields!DS_Desired_Recv_Date.Value,1,Nothing))/Count(Fields!LINE_NO.Value))))




Code block:
Private Shared count as Integer
count=0
Public Function IncrementCount() As String
count = count +1
IncrementCount = CStr(count)
End Function



Expression 2
=iif(Fields!DS_Desired_Recv_Date.Value is nothing,
((Count(IIF(Fields!LAST_RECEIVED_DATE.Value > Fields!DESIRED_RECV_DATE.Value,1,Nothing))/Count(Fields!LINE_NO.Value))),
((Count(IIF(Fields!ACTUAL_RECV_DATE.Value > Fields!DS_Desired_Recv_Date.Value,1,Nothing))/Count(Fields!LINE_NO.Value))))

& IIf(iif(Fields!DS_Desired_Recv_Date.Value is nothing,
((Count(IIF(Fields!LAST_RECEIVED_DATE.Value > Fields!DESIRED_RECV_DATE.Value,1,Nothing))/Count(Fields!LINE_NO.Value))),
((Count(IIF(Fields!ACTUAL_RECV_DATE.Value > Fields!DS_Desired_Recv_Date.Value,1,Nothing))/Count(Fields!LINE_NO.Value)))) > 0, Code.IncrementCount(), Nothing)




The error:
[rsCompilerErrorInCode] There is an error on line 2 of custom code: [BC30188] Declaration expected.
Build complete -- 1 errors, 0 warnings.





Also "Code.IncrementCount()" is underlined with red zigzag indicating an error.





How do I get the code block to work with expression 2?



Thanks,

Blair



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        SET @xd = (@lat-@x)
        SET @yd = (@lon-@y)
        SET @distance = SQRT((@xd*@xd) + (@yd*@yd))

        -- test if you have shortest distance.
        IF (@distance < @tempDistance)
        BEGIN
            SET @tempDistance = @distance
            SET @seg = @id
        END
        FETCH NEXT FROM c1 INTO @lat,@lon, @id
    END
    CLOSE c1;
    DEALLOCATE c1;
RETURN @seg
END

(This function works out an equation to get the shortest distance from
two parameters passed to the function calculated with data from each
row returned within the cursor)
As you can see here, this function contains ANOTHER cursor!! Ouch. The
fact that their is an SQL query in a function is a killer, but having
another embedded cursor there is also a killer - this has virtually
killer the application.

So, how best is it for me to correct this. Should I turn the function
into a stored procudure? But even if I do this, the nested cursor still
remains. I was thinking maybe to have the SQRT equations within the
SELECT expression and then wrapped in a MIN() to maybe get the lowest
value.

Any ideas would be of great help.

Thanks

Tryst

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Mar 20, 2002

Guys,

Has anybody out there successfully nested roles?

SQL Server seems to let you do it, but then no permissions are carried up the hierarchy.

Regards,
ChrisH

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Oct 22, 1999

Hello;

I have a question why does not the following nested transaction work?

begin tran
insert into t1 values('A')
begin tran
insert into t2 values('1')
commit
insert into t3 values('B')
begin tran
insert into t2 values('2')
commit
rollback

The rollback is rolling back everything.

Thanks

Nathan

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Oct 21, 1999

I have a situation where I have two cursors: outer_cursor and inner_cursor. The inner_cursor is supposed to execute based on a value passed on from outer_cursor. It is not running as desired. At runtime, it complians that the inner_cursor is not open.

Thanks

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Oct 4, 1999

Hi,

I want to write one query which will select multiple distinct records from one table
For e:g
Lets say in a table i have 3 fields name,tel_no,sex
Now i want to list all the records which are distinct in each of these fields
like distinct name,distinct address

IS IT POSSIBLE and if yes HOW

Thanks

Ashish

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