Question

我确定这是一个愚蠢的n00b问题，但我有以下结果表（通过我只知道一半的冗长查询创建），我想要的是能够添加两个计算相对于总数的行百分比的列：

样本结果表：

CREATE TABLE #temp
(category varchar(30)
,count_people INT
,numpayments05 INT
,avegifts05 DECIMAL(4,2)
,value05 DECIMAL(18,2)
,donorvalue05 DECIMAL(18,2)
,giftvalue05 DECIMAL(18,2)
)
INSERT INTO #temp VALUES ('Single Gifts',124945,182458.00,1.46,28787034.10,230.40,157.77)
INSERT INTO #temp VALUES ('New Donor',67598,78799.00,1.17,5915450.93,87.51,75.07)
INSERT INTO #temp VALUES ('Reactivated',19853,27394.00,1.38,4348419.38,219.03,158.74)
INSERT INTO #temp VALUES ('2yrs consecutive',20604,31633.00,1.54,3556766.75,172.63,112.44)
INSERT INTO #temp VALUES ('3/4yrs consecutive',7536,13251.00,1.76,1827917.34,242.56,137.95)
INSERT INTO #temp VALUES ('5+yrs consecutive',9354,31381.00,3.35,13138479.70,1404.58,418.68)

第一行，“单个礼物”是主查询上的汇总子句的结果（不确定这是否影响计算百分比（这意味着单个礼物类别基本上是每列的总值），并且每个category选项派生自应用于查询的group by子句。

我想要的是能够添加两个新列，'值的百分比'和'count_people的百分比'，其中value的百分比=行值05 /总值05（这是'单个礼物的值05' '类别）。 count_people的百分比将是count_people的行值，再次除以总数（这是“单个礼物类别行”中包含的内容

如果有帮助，我会使用SQL Server 2005。

谢谢！

Answer 1

此查询将按行显示您的百分比：

SELECT category, count_people, numpayments05, avegifts05, value05, donorvalue05, giftvalue05,
    value05 / SUM(CASE category WHEN 'Single Gifts' THEN value05 ELSE 0.0 END)
        OVER (PARTITION BY 1) AS [percentage of value],
    count_people / SUM(CASE category WHEN 'Single Gifts' THEN count_people ELSE 0.0 END)
        OVER (PARTITION BY 1) AS [percentage of count_people]
FROM #temp ;

假设您使用以下内容在#temp中创建了两个新列：

CREATE TABLE #temp
(category varchar(30)
,count_people INT
,numpayments05 INT
,avegifts05 DECIMAL(4,2)
,value05 DECIMAL(18,2)
,donorvalue05 DECIMAL(18,2)
,giftvalue05 DECIMAL(18,2)
,[percentage of value] decimal(5,2)
,[percentage of count_people] decimal(5,2)
)
INSERT INTO #temp VALUES ('Single Gifts',124945,182458.00,1.46,28787034.10,230.40,157.77, null, null)
INSERT INTO #temp VALUES ('New Donor',67598,78799.00,1.17,5915450.93,87.51,75.07, null, null)
INSERT INTO #temp VALUES ('Reactivated',19853,27394.00,1.38,4348419.38,219.03,158.74, null, null)
INSERT INTO #temp VALUES ('2yrs consecutive',20604,31633.00,1.54,3556766.75,172.63,112.44, null, null)
INSERT INTO #temp VALUES ('3/4yrs consecutive',7536,13251.00,1.76,1827917.34,242.56,137.95, null, null)
INSERT INTO #temp VALUES ('5+yrs consecutive',9354,31381.00,3.35,13138479.70,1404.58,418.68, null, null)

您可以运行以下更新来保存每行的百分比：

WITH cte AS
    ( SELECT category,
    value05 / SUM(CASE category WHEN 'Single Gifts' THEN value05 ELSE 0.0 END)
        OVER (PARTITION BY 1) AS [percentage of value],
    count_people / SUM(CASE category WHEN 'Single Gifts' THEN count_people ELSE 0.0 END)
        OVER (PARTITION BY 1) AS [percentage of count_people]
    FROM #temp
    )

UPDATE #temp
SET [percentage of value] = cte.[percentage of value],
    [percentage of count_people] = cte.[percentage of count_people]
FROM #temp
JOIN cte ON #temp.category = cte.category

Answer 2

使用第一个作为输入在第二个查询中执行此操作。不要尝试修改第一个查询来添加这些计算，它足够复杂。

百分比行由每个行按group by子句确定的总数组成

2 个答案: