Question

i have table with 2 columns: date and points. I want to create a query that will return the sum of points for all days, including today. This is to generate a chart of points earned up and until today.

Edit: I think my question was clearer before ews edited it 🙂

With data like that

2012-01-01    1
2012-01-02    1
2012-01-02    2     same day as above (we can have many records for one day, you can think of it as a result of one game on that day)
2012-01-03   -1

I would like to see the result:

2012-01-01    1
2012-01-02    4  (1+1+2)
2012-01-03    3  (1+1+2-1)

I’m using SQL Server 2008. If you know how to do it in LINQ to Entities that would be great.

Answer 1

If you need cummulative, you should try this:

Edit:

SELECT 
Date,
(SELECT SUM(Point) FROM A WHERE Date <= MainTable.Date) AS Points
FROM A MainTable
GROUP BY Date

Here is an SQL Fiddle to test it.