MS Access. Grouping records by date - ms-access-2013

Question

Using MS Access. I'm trying to write a report, grouped by date into weeks (Mon thru Sunday) and give a total of all transactions during the week.
There are only two tables.
Here is the sql:
SELECT tblBuyer.BuyerTradeDate, [booksold]-[bookpaid]-[booktradefee] AS Outcome
FROM tblSale INNER JOIN tblBuyer ON tblSale.BuyerID = tblBuyer.buyerID;
My query returns two columns, BuyerTradeDate and Outcome.
The image below shows some test data.
Sample output from query
I need the report to display:
Report Output
I'd be grateful for any suggestions. Thanks.

Answer 1

Here is what I've come up with that provides the solution I need.
In the report I've added a BuyerTradeDate header with a txt box containing:
="Week Number: " & Format$([BuyerTradeDate],"ww",0,0)
I've added a BuyerTradeDate Footer with a txt box containing:
="Summary for week beginning: " & " " & [BuyerTradeDate] & " (" & Count(*) & " " & IIf(Count(*)=1,"Trade","Trades") & ")"
The report looks like this:
Report Output

Answer 2

Create a field in your source query or in your report having this expression as control source:
=Weekday([BuyerTradeDate],2)
Then group on this in your report.
To have the first and the last date of the week, use these functions:
Public Function DateWeekFirst( _
ByVal datDate As Date, _
Optional ByVal lngFirstDayOfWeek As VbDayOfWeek = vbUseSystemDayOfWeek) _
As Date
' Returns the first date of the week of datDate.
' lngFirstDayOfWeek defines the first weekday of the week.
' 2000-09-07. Cactus Data ApS.
' 2003-05-01. System settings used as default.
' 2012-10-44. Data type of lngFirstDayOfWeek changed to VbDayOfWeek.
DateWeekFirst = DateAdd("d", vbSunday - Weekday(datDate, lngFirstDayOfWeek), datDate)
End Function
Public Function DateWeekLast( _
ByVal datDate As Date, _
Optional ByVal lngFirstDayOfWeek As Long = vbUseSystemDayOfWeek) _
As Date
' Returns the last date of the week of datDate.
' lngFirstDayOfWeek defines the first weekday of the week.
' 2000-09-07. Cactus Data ApS.
' 2003-05-01. System settings used as default.
' 2012-10-44. Data type of lngFirstDayOfWeek changed to VbDayOfWeek.
DateWeekLast = DateAdd("d", vbSaturday - Weekday(datDate, lngFirstDayOfWeek), datDate)
End Function