Comments on: Percentage on Total Query

By: a.p.r.pillai

a.p.r.pillai — Mon, 29 Aug 2011 18:56:14 +0000

The DSum() function in the expression Sum([ID])/DSum(“ID”,”Appointment Records”) AS Percentage sums-up the ID values directly from the 'Appointment Records' Table, inclusive of the records with the Result field value Null cases. Try after modifying DSum(“ID”,”Appointment Records”) in the above expression as Sum([ID])/DSum("ID",”Appointment Records”,"Result > 0") AS Percentage. In your SQL above, the expression have a parenthesis wrongly placed at the end. The syntax should be: Sum(x) / DSum(x,y,z) As NewName rather than Sum(x/Dsum(x,y,z)) As NewName.

By: ChrisJBuchanan

ChrisJBuchanan — Mon, 29 Aug 2011 18:11:33 +0000

My version of your solution is set out below, and works well.
SELECT [Appointment Records].Result, Count([Appointment Records].ID) AS CountOfID, Sum([ID]/DSum(“ID”,”Appointment Records”)) AS Percentage
FROM [Appointment Records]
GROUP BY [Appointment Records].Result
HAVING ((([Appointment Records].Result) Is Not Null))
ORDER BY Count([Appointment Records].ID) DESC;

However, my Results field has a number of blank fields, so the percentages (of the total ID field) are somewhat misleading. Is there a way of correcting this?

By: Chris Buchanan

Chris Buchanan — Mon, 29 Aug 2011 17:19:51 +0000

Thanks for this, but it only works on Northwind.mdb. In the later versions, they’ve changed the field names. I’d be happy to send a working version of the mdb file if anyone wants it.

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