Merging rows SQL - Access - sql

Question

I have this table on MS Access:
Name | Week | Manager | Sales
John | 201409 | Marcelo | 53
John | 201410 | Marcelo | 20
John | 201410 | Raquel | 30
John | 201411 | Raquel | 53
I have to merge Week 201410 by the max Sales and choose which Manager. After this I'd like to sum the Total Sales for this two and make like this:
Name | Week | Manager | Sales
John | 201409 | Marcelo | 53
John | 201410 | Raquel | 50
John | 201411 | Raquel | 53
Could anybody help me? I tried a lot of SQL and couldn't do nothing useful.

Answer 1

You can try this:
SELECT [Name], [Week], [Manager], SUM([Sales]) as Sales1
From [YourTable]
GROUP BY [Name], [Week], [Manager]
I did not test this so let me know what errors you get.

Answer 2

If each row had a unique identifier (Primary Key), it would be a lot simpler. However, you work with the data you have, not with the data you wish you had, so here's my circuitous way of accomplishing it. You could combine this all into one query and avoid using temporary tables; I split it out this way to make it convenient to understand, rather than being concise.
First, extract the highest Sales for each Name-Week combination:
SELECT Name, Week, MAX(Sales)
INTO #MaxSales
FROM [YourTable]
GROUP BY Name, Week
Use this information to get the Manager that you should use for each week (We use TOP 1 to resolve the case where two managers have the same sales for the same Name/Week; I'm not sure how you would want to resolve this.):
SELECT Name, Week, Manager
INTO #MaxSalesManager
FROM [YourTable]
INNER JOIN #MaxSales
ON [YourTable].Name = #MaxSales.Name
AND [YourTable].Week = #MaxSales.Week
WHERE [YourTable].Sales = #MaxSales.Sales
Now you can extract the information you need:
SELECT [YourTable].Name, [YourTable].Week, #MaxSalesManager.Manager, SUM([YourTable].Sales)
FROM [YourTable]
INNER JOIN #MaxSalesManager
ON [YourTable].Name = #MaxSalesManager.Name
AND [YourTable].Week = #MaxSalesManager.Week
GROUP BY [YourTable].Name, [YourTable].Week, #MaxSalesManager.Manager
Hope this helps!
EDIT:
Combining them all into one query:
SELECT [YourTable].Name,
[YourTable].Week,
#MaxSalesManager.Manager,
SUM([YourTable].Sales)
FROM [YourTable]
INNER JOIN
(SELECT Name, Week, Manager
FROM [YourTable]
INNER JOIN
(SELECT Name, Week, MAX(Sales)
FROM [YourTable]
GROUP BY Name, Week) AS #MaxSales
ON [YourTable].Name = #MaxSales.Name
AND [YourTable].Week = #MaxSales.Week
WHERE [YourTable].Sales = #MaxSales.Sales) AS #MaxSalesManager
ON [YourTable].Name = #MaxSalesManager.Name
AND [YourTable].Week = #MaxSalesManager.Week
GROUP BY [YourTable].Name, [YourTable].Week, #MaxSalesManager.Manager