T-SQL Group By and Sub Query - sql

Question

I am aware of what the problem is with my query, but am really struggling to find a solution here.
SQL Fiddle
I guess I'm not even really sure how to ask this. What I'm trying to achieve sum all tracking numbers for a date range grouped by branch, but (and this is the kicker) include any other records in the sum that have the same tracking number. I thought of doing something like this, but of course SQL Server doesn't like this because I can't have a subquery in an aggregate function.
MAX((select SUM(demo.NegotiatedRate) where #demo.Tracking = demo2.Tracking)) as NegotiatedRate
Here is the query I have so far if anyone doesnt want to click the SQL Fiddle link
select demo.Branch,
SUM(demo.NegotiatedRate) as NegotiatedRate,
SUM(demo2.BillRate) as BillRate
from demo
join demo2 on demo2.Tracking = demo.Tracking
where demo.ShipDate = '2014-05-01'
group by demo.Branch
Expected Output
The output that I am trying to achieve would look something like this. The GH6 negotiated rate and bill rate should match even though one of the GH6 entries falls outside of desired date range.
Branch NegotiatedRate BillRate
GH4 50 50
GH6 25 25

Answer 1

You can pre-project the overall (non date-range bound, unfiltered) totals in a separate derived table or cte and then join back to it:
WITH totals AS
(
SELECT demo.Tracking,
SUM(demo.NegotiatedRate) as NegotiatedRate
from demo
group by demo.Tracking
)
select demo.Branch,
MIN(totals.NegotiatedRate) as NegotiatedRate,
SUM(demo2.BillRate) as BillRate
from demo
join demo2 on demo2.Tracking = demo.Tracking
join totals on totals.Tracking = demo.Tracking
where demo.ShipDate = '2014-05-01'
group by demo.Branch;
SqlFiddle here
Given that there should only be one NegotiatedRate per tracking, you can circumvent the need to add the summed totals.NegotiatedRate to the outer query by applying an aggregate (I've used MIN), although this is just to pacify Sql.

Answer 2

As a bit of a simpler answer, you can do something like:
SELECT demo.Branch,
SUM(demo.NegotiatedRate) AS NegotiatedRate,
demo2.BillRate
FROM demo
JOIN demo2 on demo2.Tracking = demo.Tracking
WHERE demo.Tracking IN
(
SELECT Tracking
FROM demo
WHERE ShipDate = '2014-05-01'
)
GROUP BY demo.Branch, demo2.BillRate
As I understand it, you get all the tracking numbers you want in a certain date range, then get all the information from those tracking numbers, no matter the date range. Then groups them by the Branch and BillRate, both of which should be one value for each tracking number.

Answer 3

If I understand correctly, you want to include all rows when one of the dates is the selected date. If this is correct, then you want the logic in the having clause, not in the where clause:
select demo.Branch,
SUM(demo.NegotiatedRate) as NegotiatedRate,
SUM(demo2.BillRate) as BillRate
from demo
join demo2 on demo2.Tracking = demo.Tracking
group by demo.Branch
having sum(case when demo.ShipDate = '2014-05-01' then 1 else 0 end) > 0