Need help querying SQL aggregation

Question

What is the simplest approach to creating a dataset that you can use in a SQL Server Reporting Services report to display the following:

SalesPerson        # Sales        # Gross        Profit
John Doe               100       $140,000       $25,000
Everyone Else (Avg.)  1200     $2,000,000      $250,000


Jane Smith              80       $100,000       $15,000
Everyone Else (Avg.)  1220     $2,040,000      $260,000


...and so on.

This is a very, very simplified example of what I'm trying to do (for example, the real scenario includes showing "Everyone Else", divided into three categorical lines), but it illustrates the main task of displaying a population of data for each person with a comparison with all the others (exclusive) . Pseudo code will be fine. My first hit in the SQL code for this is quite confusing quite quickly, and I know there should be a more direct method.

Any advice appreciated.

Answer 1

, , - :

/* Few helper variables*/
DECLARE @TotalQuantity int
       ,@TotalAmount decimal(19, 4)
       ,@TotalProfit decimal(19, 4)
       ,@EveryoneElse int

(YEAR = 2009)

/* Fetch totals in the period*/
SELECT  @TotalQuantity = sum(SalesQuantity)
       ,@TotalAmount = sum(SalesAmount)
       ,@TotalProfit = sum(Profit)
       ,@EveryoneElse = count(DISTINCT SalesPersonKey) - 1
FROM   factSales AS s
       JOIN dimDate AS d ON s.DateKey = d.DateKey
WHERE   [Year] = 2009

/* Now we have totals for everyone in the period */

, .

/* Totals for each sales person vs everyone else Average */
SELECT  FullName
       ,SUM(SalesQuantity) AS [PersonSalesCount]
       ,SUM(SalesAmount) AS [PersonSalesAmount]
       ,SUM(Profit) AS [PersonSalesProfit]
       ,( @TotalQuantity - SUM(SalesQuantity) ) / @EveryoneElse AS [EveryoneElseAvgSalesCount]
       ,( @TotalAmount - SUM(SalesAmount) ) / @EveryoneElse AS [EveryoneElseAvgSalesAmount]
       ,( @TotalProfit - SUM(Profit) ) / @EveryoneElse AS [EveryoneElseAvgSalesProfit]
FROM    factSales AS s
        JOIN dimDate AS d ON s.DateKey = d.DateKey
        RIGHT JOIN dimSalesPerson AS p ON p.SalesPersonKey = s.SalesPersonKey
WHERE   [Year] = 2009
GROUP BY FullName

(-) . , , , , , . EveryoneElse , - -1; 10 5 -, EveryoneElse = 4.

Answer 2

, :

declare @i int = 0
declare @j int = 1

select * from
(
select (@i = @i + 2) as order_col, SalesPerson, sales, gross, profit
from myTable order by SalesPerson

union all

select (@j = @j + 2) as order_col, 'Everybody else'
, (select sum(sales) from myTable i where i.SalesPerson <> o.Salesperson)
, (select sum(gross) from myTable i where i.SalesPerson <> o.Salesperson)
, (select sum(profit) from myTable i where i.SalesPerson <> o.Salesperson)
from myTable o
order by SalesPerson
) x order by order_col

( UNION , , .)

Answer 3

In SSRS, add an additional detail table to the table. Then use the Scope parameter for aggregate functions and do the middle ground first.

For instance:

(Sum(Fields!Sales.Value, "table1") - Fields!Sales.Value) 
/
(Sum(Fields!NumSales.Value, "table1") - Fields!NumSales.Value)

Answer 4

I make some assumptions here, but if you have a table like this

If object_id('Sales') is not null 
  Drop table Sales

CREATE TABLE [dbo].[Sales]
(
 [Salesperson] [nvarchar](50) NULL,
 [Sales] [int] NULL,
 [Gross] [money] NULL,
 [Profit] [money] NULL,
)

It is populated with type data

Insert into Sales values ('John Doe', 100, 200.00, 100.00)
Insert into Sales values ('John Doe', 125, 300.00, 100.00)
Insert into Sales values ('Jane Smith', 100, 200.00, 100.00)
Insert into Sales values ('Jane Smith', 125, 1.00, 0.50)
Insert into Sales values ('Joel Spolsky', 100, 2.00, 1.00)
Insert into Sales values ('Joel Spolsky', 125, 3.00, 1.00)

Then a stored procedure like this can give you what you are looking for

If object_id('usp_SalesReport') is not null 
Drop procedure usp_SalesReport

Go


Create Procedure usp_SalesReport
as
Declare @results as table
(
 SalesPerson nvarchar(50),
 Sales int,
 Gross money,
 Profit money
)

Declare  @SalesPerson nvarchar(50)
Declare SalesSums CURSOR FOR

Select  distinct SalesPerson from Sales

Open SalesSums

Fetch SalesSums INTO @SalesPerson

While @@Fetch_Status = 0

Begin
 Insert into @results Select Sales.Salesperson, sum(sales), sum(Gross), sum(profit) from Sales group by Sales.Salesperson having Sales.Salesperson = @SalesPerson
 Insert into @results Select 'EveryoneElse', avg(sales), avg(Gross), avg(profit) from Sales where Salesperson <> @SalesPerson

Fetch SalesSums INTO @SalesPerson          
End
Select * from @results
Close SalesSums
Deallocate SalesSums
Return