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02.13.2008 at 02:06AM PST, ID: 23159098
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How do I Count unique values in a pivot table?
Tags: Microsoft, Office, 2003, Excel Pivot Table Count Unique Field
Hi - I'm creating a Excel pivot table from a Query in an Access database. I need it to count the number of products reviewed in a specific week, but the dataset has the review as the primary key:
Review ID   Product ID   Submission Date   Week No.    Avg Weekly   Overall Rating
12345         2467            01/01/08                 1                 1/7                   4
12346         2468            02/01/08                 1                 1/7                   2
12347         2467            05/01/08                 1                 1/7                   4
My pivot table so far picks up:
                                          Week
                                             1
Count of Review ID              3         = count of reviews that week
Sum of Weekly Average      3/7      = Avg no of daily reviews
Average Overall Review     3 1/3   = Avg review
Count of Product ID              3         = Should be 2, but is 3 as it's counting the number of instances rather than the number of Product IDs.

How do I get it to count the unique product IDs without creating a separate pivot table or standard formula within the worksheet - can it be done with a calculated field or can I add a new field to the query which can be included in the pivot table?

Please help!

Cheers.
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Question Stats
Zone: Software
Question Asked By: Merch_Ops
Solution Provided By: rorya
Participating Experts: 2
Solution Grade: A
Views: 292
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02.13.2008 at 04:19AM PST, ID: 20883487

Rank: Sage

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02.13.2008 at 04:36AM PST, ID: 20883587

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02.13.2008 at 04:48AM PST, ID: 20883640

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02.13.2008 at 05:07AM PST, ID: 20883773

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02.13.2008 at 04:19AM PST, ID: 20883487

Rank: Sage

If you were using SQL Server you can do a COUNT(DISTINCT PriductID) but this is not available in Access 2000 and I am not sure about the later versions of access. Therefore, I would do this in my excel spreadsheet.

Add a New Column and make each cell check the cell above like
=IF(A2<>A1,1,0)

Then SUM() the column.

Cheers, Andrew
 
02.13.2008 at 04:36AM PST, ID: 20883587
Thanks Andrew.

Unfortunately the dataset is going to be too big to be maintained in a spreadsheet so I can't add new columns to pivot on...

What I want to achieve is a report that can be easily updated - so the plan is to dump the data into Access then just refresh the Pivot table.

I can create a new query based on the original Table which lists Product ID and Week. I can then create a new pivot table in my report which links to this new Query.

I was really hoping to bring in this information in just one Pivot Table rather than the two.
 
02.13.2008 at 04:48AM PST, ID: 20883640

Rank: Sage

In Access the best you are going to achieve is a query that counts the number of ProductID's but that will have to match the criteria for you pivot table.
Sorry
Andrew
 
02.13.2008 at 05:07AM PST, ID: 20883773

Rank: Genius

You could create a new query with productID, week number and count of product ID, then join this to your main query on week number and productID. You would need to add a new column to your main query that calculates 1/CountOfProductID and you can then sum this in your pivot table.
Regards,
Rory
Accepted Solution
 
 
02.13.2008 at 06:30AM PST, ID: 20884376
Glad to help and thanks for the grade.
Rory
 
 
 
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