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Editorial Team
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Asked: 2026-06-06T01:32:46+00:00

I would like to use the top 5 to capture the top 5 for

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I would like to use the top 5 to capture the top 5 for a number of criteria.

The data style is month date, area1, subarea1, sub areas2 etc etc, type, unique identifier for each row.

What I’m trying to do is for each month and for area find the top 5 types.

Sample Data:


Date              Division        Sub Division       ID 
31/05/2012        Sales                              001
31/05/2012        Sales           Call Centre        002
31/05/2012        Sales           Call Centre        003
31/05/2012        Sales           Store              004
31/05/2012        Marketing                          005
31/05/2012        Marketing        TV                006
30/04/2012        Sales                              001
30/04/2012        Sales           Call Centre        002
30/04/2012        Sales           Call Centre        003
30/04/2012        Sales           Store              004
30/04/2012        Marketing                          005
30/04/2012        Marketing        TV                006

And so on.

The output I’m after is:
Top 5 at Division level (no consideration of Sub Division) for each month
Top 5 at each Sub-Division level for each month

Sample Output:

Date          Top5Areas     Volume
31/05/2012    Sales         100
31/05/2012    Marketing     90
31/05/2012    HR            50
30/04/2012    Sales         100
30/04/2012    Marketing     90
30/04/2012    HR            50

And depending on the level the sub division for the respective area:

Date          Top5Areas     Volume
31/05/2012    Call Centre   100
31/05/2012    Store         90
31/05/2012    HR            50

but with 5 for each group.

I'm not should how to do this and wonder if I'll need to build up the result through a number of queries or whether there is a better way.

Thanks in advance and appreciate your suggestions.

    SELECT [TableA].[DisplayVar] AS DisplayVar, [TableB].[Date] AS MonthDate, TableC.        [Divison] AS Divison, Volume
    FROM (SELECT [TableA].[DisplayVar],
    [TableB].[Date],
    TableC.[Divison],
    Volume
      (  SELECT  COUNT() + 1
      FROM    (   SELECT [TableA].[DisplayVar], [TableB].[Date], TableC.[Divison], COUNT()     AS Volume
         FROM    ([TableA] INNER JOIN [TableB] ON [TableA].[ID] = [TableB].[ID]) LEFT JOIN     TableC ON [TableB].ID = TableC.Descriptor
         GROUP BY [TableA].[DisplayVar], [TableB].[Date], TableC.[Divison]
      ) AS T
      WHERE   T.[TableB].[Date] = Data.[TableB].[Date]
      AND     T.Volume > Data.Volume
    ) AS Rank
    FROM    (   SELECT  [TableA].[DisplayVar], [TableB].[Date], TableC.[Divison], COUNT(*)     AS Volume
      FROM    ([TableA] INNER JOIN [TableB] ON [TableA].[ID] = [TableB].[ID]) LEFT JOIN     TableC ON [TableB].ID = TableC.Descriptor
      WHERE   [TableB].[Date] BETWEEN Date() AND DateADD("m", -12, Date())

    GROUP BY[TableA].[DisplayVar], [TableB].[Date], TableC.[Divison]
    ) AS DATA
    )  AS Data
    WHERE (((Data.Rank)<=5))
    ORDER BY [TableB].[Date] DESC , Volume DESC;

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1 Answer

  1. Editorial Team

    The only way I can think of to do a top n per date (Which is what I think you are after) in access is to use a correlated subquery. I think the simplest method is similar to using the ROW_NUMBER() function in other DBMS, it adds an additional field to your orignal aggregate query giving each division/date a rank, the the outer most where clause limits it to rows where the rank is less than or equal to 5.

    SELECT  Date,
        Division,
        Volume
FROM    (   SELECT  Date,
                    Division,
                    Volume,
                    (   SELECT  COUNT(*) + 1
                        FROM    (   SELECT  Date, Division, COUNT(*) AS Volume
                                    FROM    YourTable
                                    GROUP BY Date, Division
                                ) AS T
                        WHERE   T.Date = Data.Date
                        AND     T.Volume > Data.Volume
                    ) AS Rank
            FROM    (   SELECT  Date, Division, COUNT(*) AS Volume
                        FROM    YourTable
                        WHERE   Date BETWEEN DATE() AND DATEADD("m", -12, DATE())
                        GROUP BY Date, Division
                    ) AS DATA
        ) AS Data
WHERE   Rank <= 5

    The downfall (or benefit depending on your requirements) of this is that it does not deal with ties, i.e if you had 10 divisions with the same volume all 10 would be returned, not just 5 of them.

    I am not sure if this is exactly what you require, but hopefully will is at least get you going in the right direction.

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