PRINT only SUM by year (group by Territory) in SQL - sql

Question

SELECT year(soh.OrderDate) 'year',sum(soh.TotalDue) 'Total',st.[Group] TerritoryGroup
FROM Sales.SalesOrderHeader soh
LEFT OUTER JOIN Sales.SalesTerritory st
ON soh.TerritoryID=st.TerritoryID
GROUP BY year(soh.OrderDate),(soh.TotalDue),[Group]
ORDER BY year(soh.OrderDate),(soh.TotalDue)
This is what I came up with, but the years are scattered instead of ONE year per Territory total.
(I like to print the Total for each year in each Territory)
Is there a concise way to make this select statement?

Answer 1

If you want one row per year, then only include that in the group by:
SELECT year(soh.OrderDate) as year, sum(soh.TotalDue) as Total
FROM Sales.SalesOrderHeader soh LEFT OUTER JOIN
Sales.SalesTerritory st
ON soh.TerritoryID = st.TerritoryID
GROUP BY year(soh.OrderDate)
ORDER BY year(soh.OrderDate);
If you want one row per year and territory group, then include only those two columns:
SELECT year(soh.OrderDate) as year, sum(soh.TotalDue) as Total, st.[Group] as TerritoryGroup
FROM Sales.SalesOrderHeader soh LEFT OUTER JOIN
Sales.SalesTerritory st
ON soh.TerritoryID = st.TerritoryID
GROUP BY year(soh.OrderDate), [Group]
ORDER BY year(soh.OrderDate), Total;
Some notes:
You do not need single quotes around the column aliases. You should use single quotes only for string and date constants.
If you are summarizing just by year, then you cannot have TerritoryGroup in the output.
In neither case would you include soh.TotalDue in the group by. You are summing that column, not aggregating by it.
The order by clause should not contain soh.TotalDue; it should be the aggregated value (Total) instead.

Answer 2

In GROUP BY you say you want one line per combination of year, totaldue and territory group.
Let's say you have these records:
orderdate totaldue territorygroup
2014-01-01 100 1
2014-01-15 200 1
2014-01-21 100 1
2013-03-03 100 1
2014-04-04 100 2
Then you get these result records:
year totaldue territorygroup
2014 100 1
2014 200 1
2013 100 1
2014 100 2
(BTW: sum(soh.TotalDue) = soh.TotalDue, because you group by TotalDue.)
So the solution for you is to say what you want to see in your result records actually. One record per ______. Thus you get your GROUP BY clause and the results you want.