Question

给出以下数据集：

输入：

awbno       byhub      WEIGHT
 111          HO       2.50
 222          HO       3.00
 333          HO       2.40
 444          HO       0.80
 555          HO       1.00

费率列表：

<= 1. kg = 2.5卢比
> 1公斤。 / 0.500克。 = 0.5卢比

我正在寻找以下内容......

所需输出

AWBNO     BYHUB     WEIGHT    AMOUNT
 111        HO      2.50      4.000
 222        HO      3.00      4.500
 333        HO      2.40      4.000
 444        HO      0.80      2.500
 555        HO      1.00      2.500

Answer 1

对于金额，您可以使用CASE表达式

case when (weight - 1) <= 0 then 2.5 else 2.5 + ((weight - 1) / 0.500) * 0.5 end as amount

Answer 2

试试这个并查看sqlfiddle中的demo：

select
    *,
    case when WEIGHT <= 1 then 2.5
         else 2.5 + CEILING((WEIGHT - 1) / 0.5) * 0.5 end as AMOUNT
from yourtable

官方文档ceiling说：

返回不小于X
的最小整数值

Answer 3

Use below query to get your result :

CREATE TABLE #table ( awbno INT, byhub VARCHAR(100), WEIGHT DECIMAL(12,2) ,  
Amount DECIMAL(12,2))

INSERT INTO #table ( awbno , byhub, WEIGHT )
SELECT 111,'HO',2.50 UNION ALL
SELECT  222,'HO',3.00 UNION ALL
SELECT  333,'HO',2.40 UNION ALL
SELECT  444,'HO',0.80 UNION ALL
SELECT  555,'HO',1.00 

UPDATE #table SET Amount = CASE WHEN (WEIGHT-1)/0.5 < 1 THEN 2.5 WHEN WEIGHT  
> 1 THEN 2.5 + ( (WEIGHT-1)/0.5 * 0.5 ) END

SELECT * FROM #table

在sql中应用权重列表和权重

3 个答案: