Question

I have a situation where I have a Select with 6 fields but I only want to group by 3 fields.
As you know this looks not possible.
What do you do in these situations?

Thanks for any feedback

Answer 1

It looks like you have a misunderstanding of how group by works. Look at this example:

SELECT
    SalesOrderID,
    SUM(LineTotal) AS SubTotal
FROM Sales.SalesOrderDetail sod
GROUP BY SalesOrderID

All included columns must be either aggregated (as with LineTotal above – SUM) or grouped (as with SalesOrderID above). This will give a separate LineTotal sum for each SalesOrderID.

Group By doesn’t make sense without any aggregates.