Question

所以我有数据列应该对应红色，黄色或绿色。绿色是可达到的最高，黄色在中间，红色是最低的。

我在下面写的内容检查这些列的总和是否为零。如果是，则分配N / A等等。

如果绿色比红色更多，绿色多于黄色，则指定为优秀。但是，这是错误的逻辑，因为如果有3个绿色和3个红色等重复，那么当它应该是黄色时，我的整体输出将对应于绿色。

IF SUM([# of Yellow])=0 and SUM([# of Green])=0 and SUM([# of Red])=0 THEN
    "N/A"
elseif SUM([# of Green])> SUM([# of Red]) and SUM([# of Green])> SUM([# of Yellow]) THEN
   "Excellent"
elseif SUM([# of Red])> SUM([# of Green]) and SUM([# of Red])> SUM([# of Yellow]) THEN
   "Poor"
ELSE
    "Fair" 
End

此外，如果我想为绿色指定1，将黄色指定为3或黄色指定为5，或者指定得分最高的值，则该颜色将占主导地位。我怎么写这个？

Answer 1

使用SQL子查询

SELECT IF Y=0 and G=0 and R=0 THEN
    "N/A"
elseif G> R and G> Y THEN
   "Excellent"
elseif R> G and R> Y THEN
   "Poor"
ELSE
    "Fair" 
End
FROM
(
     SELECT Y = SUM([# of Yellow]), G = SUM([# of Green]), R = SUM([# of Red]) FROM ...
) AS A

Answer 2

您可以使用算法

SELECT
    CASE 
        WHEN SUM([# of Yellow])=0 and SUM([# of Green])=0 and SUM([# of Red])=0 THEN  'N/A'
        WHEN ( ( SUM([# of Green]) > SUM([# of Red]) )
                OR  ( SUM([# of Green]) = SUM([# of Red]) AND SUM([# of Green]) > SUM([# of Yellow]) ) ) THEN 'Excellent'
        WHEN ( ( SUM([# of Red]) > SUM([# of Green]) )
                OR  ( SUM([# of Red]) = SUM([# of Green]) AND SUM([# of Red]) > SUM([# of Yellow]) ) ) THEN 'Poor'
        ELSE 'Fair'
    End
...

Answer 3

您可以使用嵌套的case语句。我附上了一个示例临时表供参考。 case语句首先检查sum值是否为0.接下来，如果(Green > Yellow) AND (Green > Red)它给出权重为Green。类似的逻辑用于Red。默认情况下，最后一种可能性为黄色，除ELSE 'Yellow'

外，实际上不需要此代码

DECLARE @temp TABLE (Red int, Yellow int, Green int)
INSERT INTO @temp 
VALUES (0, 0, 0)
     , (2, 1, 1)
     , (2, 2, 2)
     , (1, 2, 3)
     , (1, 3, 2)
     , (3, 0, 3)

SELECT CASE WHEN Green + Yellow + Red = 0 
             THEN 'N/A'
             ELSE CASE WHEN (Green > Yellow) AND (Green > Red)
                        THEN 'Green'
                        ELSE CASE WHEN (Red > Green) AND (Red > Yellow)
                                   THEN 'Red'
                                   ELSE 'Yellow'
                              END
                  END
       END AS [Weight]
  FROM @temp

为每种颜色指定权重

3 个答案: