Calculate totals within custom SQL query (Tableau) - if-statement

Question

I have a dataset where I wish to reflect the totals from a custom SQL query I performed in Tableau. Here is some sample data:
1. I first performed a custom query that was a join, unpivot and placed my data into groups
Size Tb Val type Group Sum_AVG SKU Last_Refreshed
270 90.5 Free_Space_TB Group2 90.5 Excel 9/1/2020
270 179.5 Used Group2 179.5 Excel 9/1/2020
814 701 Free_Space_TB Group1 701 Gris 8/1/2020
814 112 Used Group1 112 Gris 8/1/2020
2. Then I aggregated the data by taking the sum of one group and the average of the other group (and final summed these groups values)
The data is being aggregated like this: (SUM_AVG)
zn(sum(if [Group]= 'Group1' then [Val] end))
+
zn(avg(if [Group] = 'Group2' then [Val] end))
The view looks like this
Here is the custom query output
Here is my view
The avail and used appear when I hover over, but how would I include the total?
This is the calculation I am using (thanks to help from a SO member):
{SUM({Fixed [type]: ZN(sum(if [Group]= 'Group1' then [Val] end))})
+
sum({Fixed [type]: zn(avg(if [Group] = 'Group2' then [Val] end))})}
I am doing something wrong, because it is totaling up across all the column(s), (I have more columns in the full dataset) when I just want the total for each column.
(Used was created from using a custom query)
Any assistance is appreciated.

Answer 1

In my opinion, this you can do without changing the underlying view. WINDOW_SUM is a table calculation and is always dependent on view/context generated. Therefore, I always prefer LOD calculations which do not depend on context.
I think you should proceed like this. As always I have changed the sample data to include sufficient details
Data used
| Id | Avail | group | used | Date |
|----|-------|--------|------|------------|
| A | 5 | Group1 | 5 | 20-01-2020 |
| A | 20 | Group1 | 20 | 20-01-2020 |
| B | 10 | Group2 | 10 | 20-01-2020 |
| B | 5 | Group2 | 5 | 20-01-2020 |
| B | 5 | Group2 | 5 | 20-01-2020 |
| A | 10 | Group1 | 10 | 20-01-2020 |
| A | 10 | Group1 | 10 | 20-01-2020 |
| B | 5 | Group2 | 5 | 20-01-2020 |
| B | 5 | Group2 | 5 | 20-01-2020 |
| A | 5 | Group1 | 5 | 20-02-2019 |
| A | 20 | Group1 | 20 | 20-02-2019 |
| B | 10 | Group2 | 10 | 20-02-2019 |
| B | 5 | Group2 | 5 | 20-02-2019 |
| B | 5 | Group2 | 5 | 20-02-2019 |
| A | 10 | Group1 | 10 | 20-02-2019 |
| A | 10 | Group1 | 10 | 20-02-2019 |
| B | 5 | Group2 | 5 | 20-02-2019 |
| B | 5 | Group2 | 5 | 20-02-2019 |
Step-1 Pivot generated in tableau as earlier.
Step-2 Calculated field sum-avg also generated as discussed.
step-3 View generated
Step-4 Add another field total
{FIXED [Date], [Group]: sum(
{FIXED [Date], [Group], [type]: zn(sum(if [Group]= 'Group1' then [val] end))}
+
{Fixed [Date], [Group], [type]: zn(avg(if [Group] = 'Group2' then [val] end))}
)}
Step-5 Add this field to details on marks card. See the GIF here
the code used in tooltip is mentioned below. Obviously, you can tweak it as per taste.
Under the <Group> , <AGG(Sum_Avg)> was <type> out of total <SUM(Total)> SKU on <YEAR(Date)>

Answer 2

This solution works:
1.Create a calculated field:
WINDOW_SUM([SUM_AVG])
2.Drag newly computed field to the view
3.Right click ‘Edit Table Calculation’
4.Specify and compute using [Last_Refreshed] and [type]
This will allow you to compute across cells, giving you your desired result