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Cumulative SQL Totals

Posted on 2011-05-05
Medium Priority
Last Modified: 2012-08-13

I have a table with the following data

date                 sales    cost_of _sales   overheads  variance
1/11/10          10000         5000                    1000         50
2/11/10          23000          5000                    2000        150
3/11/10          5000            2000                    900           60
etc. etc.

could someone tell me how to write a select query that would return:-

date               sales        cost_of_sales     overheads  variance
1/11/10         10000          5000                    1000            50
2/11/10          33000        10000                   3000           200
3/11/10          38000        12000                   3900           260

Basically I would like a running cumulative value.

Thanks for the help
Question by:sagarh
LVL 12

Accepted Solution

Paul_Harris_Fusion earned 2000 total points
ID: 35698551
There may well be a better way than this involving recursion but this is from the top of my head.

My  main concern would be performance - the execution time of this will grow rapidly with the number of rows in the table.

Select date,
 , RunningSales = (Select Sum(sales) from MyTable where date<= main.date)
 , RunningCost = (Select Sum(cost_of_sales) from MyTable where date<= main.date)
 , RunningOverhead = (Select Sum(overheads) from MyTable where date<= main.date)
 , RunningVairance= (Select Sum(variance) from MyTable where date<= main.date)
   MyTable main
order by date
LVL 33

Expert Comment

ID: 35699162
Something else to try:

with myCTE as (
  select top 1 T.[date], T.sales, T.cost_of_sales, T.overheads, T.variance
  from myTable T
  select T.[date], T.sales + myCTE.sales, T.cost_of_sales + myCTE.cost_of_sales, T.overheads + myCTE.overheads, T.variance + myCTE.variance
  from myTabel T
  join myCTE 
    on myCTE.[date] < T.[date]

select [date], MAX(sales), MAX(cost_of_sales), MAX(overheads), MAX(variance)
from myCTE
group by [date]
order by 1
option (maxrecursion 32767)

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