MS Access duplicate values using SUM - sql

Question

I'm having trouble writing a query in Microsoft Access 2016 that will show the sum of an Expense for a particular event, the sum of the signs that event produced, along with the year, event description and company name.
I think I am missing something simple, and am going to feel ridiculous once someone points it out. Hopefully I managed to format my question well enough that it is easy to spot!
Here are the tables involved, along with the dummy data I am testing with.
All_Company Company_Event
------------------ ---------------------------
| ID | Company | | ID | EventDescription |
|------|---------| |----|--------------------|
| 1 | Crapple | | 1 | Concert |
| 2 | Rito | | 2 | Party |
------------------ ---------------------------
Company_Target_Actual
----------------------------------------------------------------
| All_CompanyID | Company_EventID | Year | Quarter | Signed |
|----------------|-------------------|------|---------|--------|
| 1 | 2 | 2015 | 1 | 1 |
| 1 | 2 | 2015 | 2 | 0 |
| 1 | 2 | 2015 | 3 | 3 |
| 1 | 2 | 2015 | 4 | 1 |
----------------------------------------------------------------
Budget_Company_Expense
---------------------------------------------------------------------------------
| ID | All_CompanyID | Company_EventID | Year | Category | SubCategory| Expense |
---------------------------------------------------------------------------------
| 1 | 1 | 2 | 2015 | ABCD | 123 | 40 |
| 2 | 1 | 2 | 2015 | ABCD | cat | 113 |
| 3 | 1 | 2 | 2015 | ABCD | dog | 71 |
---------------------------------------------------------------------------------
This is my code for the query, I broke it up from the ugly Access long lines of code to make it easier to read.
SELECT DISTINCTROW All_Company.Company, Budget_Company_Expense.Year,
Budget_Company_Expense.Company_EventID, Company_Event.EventDescription,
Sum(Budget_Company_Expense.Expense) AS [Sum Of Expense USD],
Sum(Company_Target_Actual.Signed) AS [Sum Of Signed]
FROM Company_Event
INNER JOIN ((All_Company
INNER JOIN Company_Target_Actual
ON All_Company.[ID] = Company_Target_Actual.[All_CompanyID])
INNER JOIN Budget_Company_Expense
ON All_Company.[ID] = Budget_Company_Expense.[All_CompanyID])
ON Company_Event.[ID] = Budget_Company_Expense.[Company_EventID]
GROUP BY All_Company.Company, Budget_Company_Expense.Year,
Budget_Company_Expense.Company_EventID, Company_Event.EventDescription;
and here is the result from running my query
Result
-------------------------------------------------------------------------------------------
| Company | Year | Company_EventID | EventDescription | Sum of Expense USD | Sum of Signed|
-------------------------------------------------------------------------------------------
| Crapple | 2015 | 2 | Party | $896.00 | 15 |
-------------------------------------------------------------------------------------------
As you can see, it is summing as if the total signs (5) happened 3 times (the number of entries in the Company_Target_Actual table) and vis versa for the Expense. Any help on my issue would be greatly appreciated,
and if I forgot any information that may help find my mistake please let me know what else I can provide!

Answer 1

Consider splitting the query into two aggregations, one to sum Signed in Company_Target_Actual and the other to sum Expense in Business_Company_Expense. Then, join the two queries by Company, Event, and Year which are the grouping factors.
Below uses two derived tables (subqueries in FROM/JOIN clause). However, you can very well save either one as a separate query and then join them in final query:
SELECT t1.Company, t1.Year, t1.Company_EventID, t1.EventDescription,
t2.[Sum Of Expense USD], t1.[Sum of Signed]
FROM
(SELECT ac.ID AS CompanyID, ac.Company, ca.Year, ca.Company_EventID, ev.EventDescription,
SUM(ca.Signed) AS [Sum Of Signed]
FROM (Company_Target_Actual ca
INNER JOIN Company_Event ev
ON ca.Company_EventID = ev.ID)
INNER JOIN All_Company ac
ON ca.All_CompanyID = ac.ID
GROUP BY ac.ID, ac.Company, ca.Year, ca.Company_EventID, ev.EventDescription) AS t1
INNER JOIN
(SELECT ac.ID AS CompanyID, ac.Company, be.Year, be.Company_EventID, ev.EventDescription,
SUM(be.Expense) AS [Sum Of Expense USD]
FROM (Budget_Company_Expense be
INNER JOIN Company_Event ev
ON be.Company_EventID = ev.ID)
INNER JOIN All_Company ac
ON be.All_CompanyID = ac.ID
GROUP BY ac.ID, ac.Company, be.Year, be.Company_EventID, ev.EventDescription) AS t2
ON t1.CompanyID = t2.CompanyID
AND t1.Company_EventID = t2.Company_EventID
AND t1.Year = t2.Year