How to Get cumulative totals mysql - mysql

Question

I have a table where I keep information about financial returns. The columns includes receipts, repairs, service_amount, tyres, fuel, salaries_allowances, others.
I would like to get the cumulative net return like:
Date Receipts repairs service amount Total costs net Return
2012-01-10 0.00 120,000.00 0.00 120,000.00 120,000.00
2012-01-12 60,000.00 0.00 0.00 60,000.00 60,000.00
I am currently using this query:
SELECT
a.consignment_date, a.receipts, a.service_amount, a.repairs, a.tyres,
a.salaries_allowances, a.clearing_fee, a.others,
a.service_amount + a.repairs + a.tyres + a.salaries_allowances + a.clearing_fee + a.others as total_costs,
(b.receipts -(a.service_amount + a.repairs + a.tyres + a.salaries_allowances + a.clearing_fee + a.others)) as netreturn
FROM
vw_local_freight a CROSS JOIN vw_local_freight b
WHERE
a.consignment_date >= b.consignment_date AND a.vehicle_no='123X'
GROUP BY a.consignment_date

Answer 1

I would look at a query like
SELECT
consignment_date.*,
consignment_date.credits - consignment_date.costs AS totalCosts,
(#runningTotal := #runningTotal + consignment_date.credits - consignment_date.costs) AS netReturn
FROM (
SELECT
consignment_date,
SUM(receipts) AS credits
SUM(service_amount + repairs + tyres + salaries_allowances + clearing_fee + others) AS costs
FROM vw_local_freight
WHERE vehicle_no = '123x'
GROUP BY consignment_date
) AS a, (SELECT #runningTotal := 0) AS b
The subquery tallies up your costs and credits, then the outer query performs your running total. If you need individual column sums within the inner join then they can be added in easily enough.

Answer 2

try this:
SET #runtot:=0;
SELECT
q1.d,
q1.c,
(#runtot := #runtot + q1.c) AS rt
FROM
(SELECT
DAYOFYEAR(date) AS d,
COUNT(*) AS c
FROM orders
WHERE hasPaid > 0
GROUP BY d
ORDER BY d) AS q1

Answer 3

Ok, I'm basing my answer on your query, rather than on your expected table result:
SELECT *, receipts - total_costs as NetReturn FROM (
SELECT a.consignment_date, sum(a.receipts) receipts, sum(a.service_amount),
sum(a.repairs), sum(a.tyres), sum(a.salaries_allowances),
sum(a.clearing_fee), sum(a.others), sum(a.service_amount + a.repairs
+ a.tyres + a.salaries_allowances + a.clearing_fee + a.others) as total_costs
FROM vw_local_freight a
WHERE a.vehicle_no = '123X'
GROUP BY a.consignment_date
) S