T-sql :get SUM of Columns - sql

Question

I have a table that looks something like the following :
W1 W2 w3
Gold 10 2 3
Silver 3 1 1
but i need a result :
W1 W2 w3
Gold 10 12 15
Silver 3 4 5
Is there any way i can get that result?
My sql query :
SELECT
week1=[1],week2=[2],week3=[3]
FROM
(
SELECT
[week]=DATEPART(ISO_WEEK,ta.enddate),ta.id
FROM
table1 ta where ta.enddate BETWEEN '2016/01/01' AND '2016/12/31'
) src
PIVOT
(
SUM(id) FOR week IN (
[1],[2],[3])
) piv

Answer 1

Does this do what you want?
select t.??, t.w1, (t.w1 + t.w2) as w2, (t.w1 + t.w2 + t.w3) as w3
from table1 t;
I don't know what the name of the first column is, so I just used ??.

Answer 2

One thought, since you tagged this question with Reporting Services. If, in the end, you are displaying the info using Reporting Services I would highly consider using the Matrix tool to do the pivoting and summation of the data because that is exactly what it does.
To further explain as it seems you are going to use SSRS. Your matrix would have a dataset that would be similar to this:
SELECT
[week]=DATEPART(ISO_WEEK,ta.enddate),
ta.id,
ta.MetalType as GoldorSilver
FROM table1 ta
where ta.enddate BETWEEN '2016/01/01' AND '2016/12/31'
The matrix would have a header and footer and column group would be [Week] with a Column Group total to do the sum across the week. The row group footer would do the sum across all weeks.

Answer 3

Calculate the running total before pivoting the data
SELECT element,
week1=[1],week2=[2],week3=[3]
FROM
(
SELECT [week] = DATEPART(ISO_WEEK,ta.enddate),
price = sum(ta.price)Over(Partition by element Order by enddate),
element
FROM table1 ta
where ta.enddate BETWEEN '2016/01/01' AND '2016/12/31'
) src
PIVOT
(
SUM(price) FOR week IN ( [1],[2],[3])
) piv
for older versions
SELECT element,
week1=[1],week2=[2],week3=[3]
FROM
(
SELECT [week] = DATEPART(ISO_WEEK,ta.enddate),
cs.price,
element
FROM table1 ta
cross apply(select sum(price) from table1 tb
where ta.element = tb.element and ta.enddate >= tb.enddate ) cs (price)
where ta.enddate BETWEEN '2016/01/01' AND '2016/12/31'
) src
PIVOT
(
SUM(price) FOR week IN ( [1],[2],[3])
) piv