Hi Frank,

DECLARE @lfBASE INT
SET @lfBASE=52

CREATE TABLE #WL (ID INT, WeightLimit INT, FreightRate FLOAT, FuelRate FLOAT)
INSERT INTO #WL VALUES
 (1,     1, 12.0, 1.2),
 (2,    50,  1.0, 0.1),
 (3, 99999,  0.5, 0.05);


WITH WL (ID, WeightLimit, FreightRate, FuelRate, DIFF, USED, FR_C)  
AS
(
 SELECt ID, WeightLimit, FreightRate, FuelRate, @lfBASE-(WeightLimit-0) AS DIFF, (WeightLimit-0) AS USED,
        FreightRate*(WeightLimit-0) AS FR_C
    FROM #WL 
    WHERE ID=1
 UNION ALL
 SELECT AA.ID, AA.WeightLimit, AA.FreightRate, AA.FuelRate, 
        CASE WHEN WL.DIFF-(AA.WeightLimit-WL.WeightLimit)<0 THEN 0 ELSE WL.DIFF-(AA.WeightLimit-WL.WeightLimit) END AS DIFF, 
        CASE WHEN WL.DIFF-(AA.WeightLimit-WL.WeightLimit)<0 THEN WL.DIFF ELSE AA.WeightLimit-WL.WeightLimit END AS USED, 
        AA.FreightRate*CASE WHEN WL.DIFF-(AA.WeightLimit-WL.WeightLimit)<0 THEN WL.DIFF ELSE AA.WeightLimit-WL.WeightLimit END AS FR_C
   FROM #WL AA INNER JOIN WL ON AA.ID=WL.ID+1 AND WL.DIFF>0
)
SELECT ID, SUM(USED) AS USED, SUM(FR_C) AS FR_C
  FROM WL
  GROUP BY ROLLUP (ID)

DROP TABLE #WL

MartinaJ

>Hi,
>
>I need some help on how to calculate the freight charge on a package.
>
>I have a table like this :
>
>

ID, WeightLimit, FreightRate, FuelRate
>1,     1,         12,          1.2
>2,      50,        1,         0.1
>3,     99999,    0.5,         0.05

>
>If I have a package weighing 2 kgs, then the total freight is calculated as:
>
>1st kg = 12
>2nd kg = 1
>Total = 13
>
>or if I had a package weighing 52 kgs:
>1st kg = 12
>next 49 kgs = 49 * 1 = 49
>next 2kgs = 2 * 0.5 = 1
>Total = 62
>
>Is there a way to achieve this in SQL?