Question

I have a basic table FoodSales in which there is 3 columns SaleForDay decimal (10,2), SalesToDate decimal (10,2), ItemOrder Int

the data is like so

SaleForDay|SalesToDate|ItemOrder
4.99|4.99|1  
12.99||2
14.99||3
5.99||4

I’m trying to get the result

SaleForDay|SalesToDate|ItemOrder
4.99|4.99|1  
12.99|17.98|2
14.99|32.97|3
5.99|38.96|4

The method here is SalesToDate = the previous itemorder SalesToDate + the Current SaleforDay value.

To help out.

CREATE TABLE #FruitSales
(
   SaleForDay    DECIMAL (10, 2),
   SalesToDate   DECIMAL (10, 2),
   ItemOrder     INT
);

INSERT INTO #FruitSales (SaleForDay, SalesToDate, ItemOrder)
VALUES ('4.99', '4.99', '1'),
       ('12.99', NULL, '2'),
       ('14.99', NULL, '3'),
       ('5.99', NULL, '4');

SELECT * FROM #FruitSales;

DROP TABLE #FruitSales;

Thanks for the help, i realize this is probably simple as pie.

Answer 1

CREATE TABLE #FruitSales
(
   SaleForDay    DECIMAL (10, 2),
   SalesToDate   DECIMAL (10, 2),
   ItemOrder     INT
);

INSERT INTO #FruitSales (SaleForDay, SalesToDate, ItemOrder)
VALUES ('4.99', '4.99', '1'),
       ('12.99', NULL, '2'),
       ('14.99', NULL, '3'),
       ('5.99', NULL, '4');

update f
SET SalesToDate = (select sum(saleforday) from #FruitSales ff where ff.itemorder <= f.itemorder)
from #FruitSales f

SELECT * FROM #FruitSales;